Thanks, Phil, that's good to know. Who knows, maybe I'll have to put one on my birthday or holiday wish list so the missus won't have to bug me about what I want this year.
On the other hand, I continue to vacillate on whether, (for the kind of shooting I primarily intend with this rifle, 100 yards or less), they're more attractive because we can afford to add them than because we actually need them.
(As if "need" has ever been the limiting factor in the past.
)