Worked on answering my own question...
....by calling the Hogue company (GetGrip). I was told that you can order directly from them (at $129) and thereby get a quicker shipment. She also told me that other dealers (Brownells, Midway USA) do not stock these but will special order them. The price tends to be better this way, but it may take up to 30 days to get one.
Fyi, for any of you who might be interested in these. I think they look cool (better-looking than the black or tan ones). I'm going to give it a while, then go for one for my standard barrel 10/22.