I tried deathwarping during Paper Trail yesterday and suprisingly it worked out. I warped from the middle of Alderney to the top of Algonquin.

http://www.twitch.tv/jolzi/c/4166771

I guess this could also work on all the other phone call triggered missions like Hostile Negotiation.

well in this case you probably wouldve been faster jsut driving there cause u spawned pretty far away form the helicopter.. and actually u try to take these phone calls only when u are near the locations anyway, but if u cant avoid taking the phone call and are in a pretty bad spot this might help you out a lot

Deathwarps (that I've tried):

Hostile Negotiation: Just outside the factory/warehouse Paper Trail: Down the street from the mission heli Mr. & Mrs. Bellic: Down the street from where you pick up Kate Out of Commission (final mission w/ Jacob & Roman): Around the corner from the car Jacob and Roman are waiting in (this is a major time saver)

i tried some phone triggered mission deathwarps long time ago. most of them were kinda worth it.

the only real downside to it is the loss of body armor.

And another Deathwarp.

You don't need to finish the Mission Lure. After you eliminate the Target you can kill yourself and get the mission awarded. Or at least you'll get the next Francis Marker for Blood Brothers.

But i don't think it's worth it in classic% unless you have a very bad car since the hospital is close by and you are left without a car. And you have at least a Feltzer at this point. But it should save some time in any%.