I mounted my new RS-35s with the Omniport 10.0 wall mounts last night. The mounts are not large, however I put a pair of rubber bumpers on the lower edge of the speakers and rested them on the wall facing down toward my listening area. For me... they worked out fine.
However, if you intend to use the mounts to hold the RS-35s away from the wall at whatever angle you'd care to use... I don't think they're strong enough. They are also quite short. So there isn't allot of room to angle the speakers since they're so large. If you're really looking for mounts to HOLD the speakers away from the wall... you may want to look into the 20.0 version.
One note... the shaft from the 10.0 does match the screw insert on the RS-35's. However, I found that one of the RS-35s that I bought did not have the hole drilled and completed in the back of the cabinet. What a PITA! And, since I purchased these online (BrandNamez)... I didn't want to go through the hassle of returning them and getting replacements.
The Omnimounts do come with an option to use the keyhole mount. I used this for mounting the defective speaker.
Hope this info helps.