I think he was talking about the plain Exo's XS
The Exo Pro's have a completely different set up on the quick release
The steel Exos have the old fasioned M series clamps on them and are a direct swap for all the old PJ/7/powerizer/poweriser/skyrunner bits
I just wasn't sure if they had changed anything on the Second Gen Powerisers
I know they put alloy clamps on but think they kept the hole spacing the same
So to put it simply
If you could fit the Poweriser calf clamps to the earlier PJ/Poweriser/etc they will fit on the Exo's but not the Exo Pro's with quick release
Jason