Working on OSVs compared to?

Hello All, I am new to the forum but not to the industry. Ive been thinking about a move to OSVs, but have heard that the engineers are mostly tankermen on board. I hate pumping, and enjoy fixing things, I came from Fishing, then tugs, then Seismic vessels. How happy are you equal time engineers on OSVs? I wouldn’t consider a 2/1 schedule, so Chouest is out of the question. Any feedback is sure appreciated. Sincerely, Yeasty