I'm always for competition. I'm curious what the limits of their visual scripting are, UE4's Blueprints biggest issue is the performance. Wounder if they found a way to tackle that.
Fully agree with @monster , painting and envelope fiddling are a very tedious way to skin. Assigning weights at the vert level with the table and scripts is much more efficient.
http://planetquake.com/polycount/cottages/crazybutcher/code/wkcopykey_121.zip maybe this helps not my script but did a little extension to it, the original author couldnt be reached...