Why not try it?
Neither of these watches will be hard to sell or hard to buy again if you want to go back to the FOIS down the road.
My thinking on watch collecting is to buy, sell and keep in nearly equal measure - buy carefully, try things out you think you might like and sell if you don’t. In terms of modern dive watches alone, I’ve owned a 14060 Sub, a 300M Bond, a Bvlgari Scuba, a different style of 300M Bond, a Seiko SKX and now I’m on a 300M 2254.50. The rest I’ve sold or am selling. I like the 2254.50 - but if I ever get tired of it, it’ll be sold and I’ll try something else. That’s part of the fun of this hobby.
I say sell the FOIS and try something else! You can always go back!