Any vehicle will if you're slow enough letting out the clutch. This is probably going to lead you to stall more often than not, at first, and is also just prolonging first gear starts which in turn prolongs slipping the clutch to get the vehicle moving. This increases clutch wear, and should probably be avoided.
Your goal when driving stick is to avoid slipping the clutch as much as possible. You should really only ever have to do this in first gear starts. I'm not sure if you understand how it works but here's a quick (simplistic) overview for you:
Your engine connects through your transmission to your drive wheels via a clutch plate/flywheel connection. As the engine turns, the flywheel turns, and if they are connected, so does the clutch (and in turn the transmission, and thus the drive wheels). The connection is maintained by friction and pressure. The flywheel and the clutch just press together really hard - hard enough to prevent any slippage, so it is like a single unit. When you clutch in you relieve pressure and seperate the flywheel and the clutch. As you clutch out, the two meet and pressure gradually builds until they are "connected". Take your hands and put them together palms facing each other, like you're clapping. Press together really, really, really hard. Try and slide one hand off the other while pressing in. That's the sort of connection we're talking about.
When you launch in first gear the flywheel (engine) is turning, the tranny (clutch) is not. As the two (hopefully slowly) meet, friction starts to transfer energy through to the clutch, which will start rotating. This is actually a lot of load, however, because the clutch/tranny connects to the drive wheels and hey that's 3100 pounds of vehicle you are trying to get rolling. If you don't give it gas to keep the engine turning, the engine will bog and possibly stall. The other way of doing this is to just ease out on the clutch so slowly that the energy transfer is slow and doesn't risk stalling the motor.
This is the only time you'll want to be slipping out on the clutch, as it is the only time you'll have to gradually overcome a stopped vehicles very (very) high innertia. The rest of the time you will be trying to revmatch, which I'm not going to go into really.
Suffice it to say, you should not be just slowly easing out on the clutch in traffic to get it started. It's not really bad for the vehicle done once in a while, but repeated starts without throttle are just going to be slow, jerky, risk stalling, piss off people behind you as you take forever to get in gear, and wear the clutch far more than you need to. In fact, like all components of the vehicle, you need to break in your clutch (just like you break in the motor or the brakes) with heat cycles and being gentle on it. What you propose isn't going to be gentle on the clutch.
I'll have to learn a good technique for 15-30 mph interstate stop-and-start fun
You could just keep shifting between second and third... good practice for timing coming out on the clutch during upshifts and revmatched downshifts. When I'm in situations like that I just use second gear and cruise along a bit slower than the pace of traffic. I almost always end up having more than enough space in traffic that I can just ease off the gas when traffic slows down and use engine braking to slow down before easing back into the throttle when my lane starts moving again. Sure I have people pull in in front of me, but traffic behind me maintains a fairly steady pace, I rarely if ever have to shift or get on the brakes, and it doesn't cost me much time at all getting from point A to point B. So much less stress than riding the guys ass in front of me...
