I haven't used wax for years, if I remember correctly it was a lot of work, wax on two panels wax off one, and you really worked up a sweat. Turtle wax out of a tin was my choice. Do you think the finish is worth the extra work?
Some of the modern waxes or sealants are much easier to apply than the turtlewax of old.
Applied correctly they are easy on and buff of with a plush microfibre towel.
The finish is definitely worth the extra work, and a good wax or sealant will help to keep the car cleaner as water (including dirty road spray) will bead and sheet off more easily. Google the "lotus effect" for an explanation of why.
Good winter waxes include the Collinite range as these are very durable and last a good 4 to 6 months depending on conditions. They don't cost a fortune either.