Since nobody has answered (yet), I haven't tried it and have no intension of doing so. I'll give my views based solely on ZWSoft's website.
It seems to have a very cumbersome user interface that provides very little to justify the prices I saw. The sketching environments for all the parametric CAD systems I've tried provide far superior facilities to the non-parametric sketching of ZWCAD. Once you've tried parametric CAD you'll never want anything else.
As I've mentioned in other posts, ALL CAD systems have a steep leaning curve, so don't waste your time on learning a non-parametric CAD system. YMMV