I feel kinda weird (almost woosy for a moment) when I have been wearing my contacts for the day, and then take them out and put on my glasses. There is a depth perception thing that seems to go on. Takes a moment, but then it goes away. Kinda like when you have been wearing your glasses all day and then suddenly "become aware" of the frame just outside of your vision... and you hyper focus on it and sortof have the non-corrected vision within your peripheral vision as a result... and it is weird and headache inducing almost.
I'm not sure I've ever experienced it the other way (from wearing contacts) though. There is no peripheral vision that isn't corrected.
But the 4 hours, yes. That is pretty normal for first time use. By the end of the week you should be able to keep them in much longer without discomfort.
As for the wrinkles... I used to hate wearing my glasses instead of my contacts because I couldn't see to put on my makeup. Well, not unless I really shoved my face right into the little mirror on a stand. Still annoying. But now, I kinda like wearing my glasses instead of my contacts... because no matter how much I "mess up" putting on my makeup, or even if I go without a little bit of it, my frames add some oomph to my face, and I don't NEED as much makeup. They kinda hide the details of my eye makeup (and the wrinkles too I think).
But you'll get over the vanity. :) When you finally get comfortable with full time usage, you will love not having to deal with glasses. No steaming up when you walk outside, or look in the oven, or pour the pasta in the strainer... No nose mark. You can lie back (or on your side!) to watch TV or read a book and not get mashed behind the ear... It can be heavenly to be wearing contacts.
Give it some time. The first day is always the most uncomfortable. By the end of the week, you'll be an old hand at it. :)