No problem at all, it works well, no fumbling with 2 wrenches is a real improvement. Angle grinders and dremel tools with the spindle lock for me are a must.
Edit: I use roloc disc a lot on the astro the spindle lock holds it while you finger loosen the disc on the holder.
Edit: I use roloc disc a lot on the astro the spindle lock holds it while you finger loosen the disc on the holder.