I have been using Xqt with blockbox WM and now fluxbox with little problem for the last 3 months with Cacko 1.2x.
Issues:
1. Cacko key remapping of the /.,? keys interfere with many applications. I may have a solution for this, but have not had the time.
2. xdpyinfo reports the dpi as 2032x2032, I think this it effecting my perl/tk environment. I just downloaded the sources to fix it myself.
3. Unable to determine if development community is alive.
Applications that I run:
xterm
rxvt
xchat
gnuplot /w X11 output
cgoban/gnugo