I use MOI Software all the time to create 3D bases for my paintings. It's a really great piece of software. I can do basic building block-ins in minutes, no keyboard needed.

It has a bit of a learning curve to figure out the most efficient way of doing things, but once you learn it, it's super quick.

MoI - > Zbrush works great for getting quick block-ins with a bit of textural detail sculpting in Zbrush.

But Moi3D is really fun using with a XP-Pen https://www.xp-pen.com drawing tablet, I find I can work faster because I dont have to "drag" the cursor around. I can only describe using a tablet with Moi3d as being a more fluid and visual experience versus and mechanical one when using a mouse and keyboard.