"corners should be round" Theo Evo .22/.177 - Meopta 6x42, DS huntsman classic .20 vortex razor LH 3-15x42 under supervised boingrati tuning by Tony L & Tinbum, HW77 forest green - Nikon prostaff 2-7x32 plex.
I would be careful about how it affects your scope's position. Not if it would require re-mounting, I'd say. The knob might also catch your thumb on the scope or mount. If made of a nice non-metal no slip material it could be handy if cocking is stiff. Rat Works fits one that looks like made of synthetic that might work nicely in the wet.
On full bore I like it on the older Tikka, but especially when one works that bolt with the palm of the hand (opening it palm up).
Hendrick