I only tried a tiling WM for a few days several years ago. I am ok using the terminal but not everything can be done easily there. In the screenshots of people setups, there are always fancy terminals. Are tiling WM good also for other GUI a part from terminals?
dwm has a tiling layout in any case, and most TWMs do too, so there’s no real reason to leave your TWM, even if you need/want foating windows.