I believe there was a thread on this exact question a short time ago. However, I just came back from bear hunt in Alaska where I used a trekking pole. I did not have an adapter and had no issues. I could easily adjust the height so that it functioned well in either sitting, kneeling or standing. I am not sure that I would like an adapter as I feel that it would make the transitions less handy and add another piece to lose. Just my .02
I don't think this is what you're looking for, but I have a TrailPix lightweight tripod system. Works very well if your binos or spotter or camera is light enough. I used it with a Nikon ED50, good match.
Definitely takes a bit too much time to set up vs. a regular tripod, not nearly as stable and wouldn't use it with larger spotters. I have a Swarovski 65mm spotter: NOT a good match for that! Should work very well with binos that have a tripod mount though.
There may be some uses for it but I've found that most people trying to use a trekking pole don't understand the value of a tripod for glassing, even a tripod that's not top of the line.