Interest to hear that of the RS2000, it was at one time on the wish list, for the slicer for coning, glad I'd not got it, looking at the kits, you never got the arm brace, it was extra.
I have the sorby Fingernail bowl gouge in 3/8 & 1/2" and both are larger diameter bar than my Henry Taylor square ground ones in the same sizes, I'd won just the Texturing tool, then added all the bits for Spiralling and the extra large cutter, must use it sometime, as the Club had a Sorby demo recently. I've the Multi Tip Hollowing Tool RS200 kt, finally the 1/16" Slim Parting Tool.
My roughting gouge is the 1 1/2" by Henry Taylor which will and has tackled both big and small form 6" sq to Lace bobbins.. Oh sisters... I saw which may have been the same gouge used in a Simon Hope handle which gave a long handle, it is just a tool for spindle work, how big do you go, after all in the end it's all down to the tang and that's it weakness point, will follow what you do with your design idea, keep us all posted.
My curiousity, sorry if it is, is to have some idea as to just how much of a challenge you have and what you face with turning to achieve your work, we have heard of others the same to some degree, with asking it was not with the wish to have upset you at all, we look forward to your active part in the forum.
Regards. David