Yes, of course, it's kind of you to ask, even if it's unnecessary. I really appreciate your work on SpkToolbar and it's a pleasure to share my improvements with you...
Regarding the separator in TSpkButton, I confess I hadn't seen that option

.
After checking, I personally prefer having a separate component; it's simpler to find and maintain, IMHO.
I'll probably need to add other components, and I won't hesitate to share them with you!