Do it!
I’ve never held a silvertip, so I can’t compare. However I have two t/d Blacktail recurves, and when I recover a bit from the new Treadway, plan to order the new Blacktail t/d longbow. On my recurves, I have the high wrist grip. After shooting my Treadway’s and a 1960 Bear Kodiak Special I’m very seriously thinking about sending my newer Blacktail in for a grip reduction.
The two Blacktails are different; my first one is almost 15 years old, and was made by Norm in Oregon. The newer bow riser (had a new handle made for my extra set of lighter limbs) is only about a year and a half old, and was made in the new shop in Indiana. It feels bulkier to me than my original, though I have not gone over it with a micrometer. I think the grip reduction would be good, I would just like to feel and shoot a medium grip before making a permanent decision like that!