I am not able to offer a reliable response to your question since my experience is so different. My stand mounted speakers weigh 105 lbs each so much heavier and they are actually bolted to a steel plate that is also bolted to the underlying 75 pound speaker stands. Therefore, in my case, I bind the speakers to the stands and then float the 180-pound stand/speaker mass using the footers that are under the stands. Regarding adhesive, I typically do not use it with Herbie's products but I would not be against using it. I tend to change things out occasionally so the adhesive might be problematic for me.
In your case, it sounds as if your lighter speakers are being isolated from the stands. Therefore, I suggest contacting Herbie's and asking for their opinion based on the weight and level of isolation desired. As another alternative, for just over $20, you could try platinum silicone hemisphere footers that can be sized based on the weight they support and that do come with adhesive you can use if desired. I cannot comment on whether those might stain the bottom of the speakers since I have not used them in contact with items that have wood veneer.