When I made the jump to MWD I had just finished my degree and also had 5 years of rig experience, including time on the brake.
I could have made the switch to DD after about 3 years if I had wanted. I ended up going overseas in a managerial role instead. When I came back from overseas I did some rotary steering engineering support for a short stint. Didn't care for the money, hated Houston and the job wasn't very challenging.
I made the jump to DD then and haven't regretted it once.
This post was edited on 3/5 at 11:34 pm