(A) Not wearing a watch isn't a good idea. Clocks in the plane can and will fail, and most IPs/Sim Instructors will flip if you tell them you can't do a timed turn or a full instrument procedure because your clock broke. They will ask why you don't use your watch (true story, my own and a few others). Why not have a back-up?
(B) That said, there's no sense in buying a nice watch to fly with. Soemthing you can easily read day or night, with some way to read seconds is all you need. I used a 25 dollar Timex Ironman, the ol' exchange special. Worked fine. Any watch you wear is gonna get beat up as years go by.
BUT, if you relatives insist on buying you one, get a nice Tag. Tell them you wear it all the time flying. (but wear the cheapo one anytime you're on the flightline).