I'm also in my 2nd winter as an owner, and was fed-up with standing outside the car last winter not being able to get in.
I'm experimenting at the moment with 'low tack self adhesive tape' - shouldn't have to on great car, but I'm prepared to give it a go if it means I can get in the car in the morning. So far its worked a treat, I haven't been locked out once. Min car temp was -10.5 last Thursday, but window dropped no problem. My only thought is that it might be due to the 'dry' cold conditions rather than 'wet' cold. This morning though, windscreen and drivers window solid ice film, peeled off the 'low tack' tape, nice clean 1" strip ice free, and the window dropped, no problem.
I'm using the stuff you can buy to protect carpets / wooden floors etc when your decorating, comes in a long roll. Cut a strip 2" wide and then press firmly onto the window and rubber seal. Stops any water getting down the seal, and so doesn't freeze together.
Watch me be frozen out tomorrow now