The way you can look at it is the msq almost levels you to 90 by itself. Doing anything else like roulettes will mean that you're gonna surpass it pretty quickly. It's not hard to level alt jobs so you don't have to stress about "wasted" experience but it can be fun to try new stuff so feel free to if you want.

If you play a lot, you will just have to get used to not having skills whenever you're ahead of msq though.

The meme on NA is that JP seems more popular because the OPPO parties clear fast.

I'm comfy with both and think that people should pick whatever makes sense but I think there are a lot of merits to the lack of movement of JP.

I end up in oppo parties more and people clip the fires and forget their directions a lot haha