i agree whole-heartedly with you boogie, if stealthing was my main objective in taping, i wouldn't use a v3, i'd be using a much smaller pre/adc. and if someone asked me for advice on a good stealth rig, i wouldn't recommend the v3. however, i'd definitely say its possible to do so, even in the more difficult situations although it wouldn't be ideal and you might even need help getting everything in, but i think its possible.
maybe it wouldn't work for some hardcore metal band with wands and walk thru metal detectors, but i don't think i've ever taped a band that has had a walk thru. but i think its safe to say that wands pretty much suck and with a little work, you can get stuff past them.
perhaps i'm lucky cuz i tape in michigan and security is usually pretty lax. i've stealthed the v3 before, in a side bag. i checked my levels a couple of times and never looked again, so the blinky lights really don't apply, plus they can easily be covered or dimmed with tape. as for getting it in, i put it in a binder, completely hooked up, and the guard looked in my bag, touched the binder, moved some things around, and let me go on my way, never even noticing the v3. in the same night another guard had a 5 minute conversation with a kid sitting in front of me about how he couldn't be taking pictures. not to mention freelunch sitting right beside me with the 722 tucked away. both of us with mics in our hat, and no one noticed.
so i know for a fact its possible, maybe not in the toughest of situations, but its possible in every venue in michigan, and that'll work for me.
+t's for stealthing, and making awesome recordings