#1 - When I am doing rear bolster removed knives for every day carry I almost always do them with Jade. The secondary issue is adhesion, especially without the rear bolsters. I have completed over 2,500 knives and not one has been returned for a scale coming off. I am VERY careful about contamination and preparation of both the stone and metal surfaces and I only use UNEXPIRED Loctite 325.
#2 - It makes no difference to the equipment what kind of metal the bolsters are although I use silicon carbide wheels to do most of the metal removal and diamond for the stone. Diamond cuts stone faster than metal and you will get a cupping effect if you are not careful, especially with worn diamond wheels and belts.