Our jumpseat committe is VERY adamant that we speak to the crew even when we have a boarding pass/seat assignment. It seems kinda dumb to me to follow the old procedures of asking for a ride when the gate agents give you a seat. It seems many of the airlines that have the procedure of just giving an offline guy a seat are getting away from formally calling it "jumpseating". I mean, if I'm an offline pilot, what's wrong with the airline just giving me an open seat in the back without the formality of asking the Capt for a ride?
I hate interrupting the crew to ask for a ride. Sometimes they are pretty busy and have better things to do. Also, at times you hold up the boarding process a bit by being in the way.
The old Horizon jumpseat form specifically said NOT to talk to the crew until after the flight if you had a seat in the back.
I think it's just easier for everyone if the airlines get in the habit of opening up the seats in the back to deadheading offline guys, give them a seat assignment, and let the Capt know via the paperwork they have a jumpseater back there.