Thanks, glad you like it

I sculpted her partially in pose: I started with a d&d dummy to get the rough pose. After rough sculpting out body, arms and legs I cut of hands and head to move them to brush symmetry in a different scene. Done sculpting these parts I imported them back, positioned and stitched them using the zipper and join tool.
Boots, armor,hair aso were extracted/separated/extruded from the body mesh the same way as I did it with the Gnome. The holes in the armor parts were done on the extracted surfaces before extruding them.
Yes, a HideObject and/or GhostObject would be nice, totally agree! (maybe with some "show/hide" icon in the scene browser - similar to Meshlabs layer list). Here I handled this by exporting when I had to work on "covered" areas.
Also to lower the memory load in the scene, I exported all stuff as separate OBJs and loaded only the stuff I needed in the current state of sculpting. (BTW: Wouldn´t a limited number of Undos save resources - not sure)