The only benefit of the SFP is at extreme ranges if your reticle completely covers the target you can dial down/up a bit to be able to see the target instead of making a blind shot. Others will have to chime in per their experience, but I don't think you'll have that problem with the EBR1 reticle.
The FFP reticle stays in relation to the target's size throughout the magnification range, hence why you can use the reticle for ranging on any magnificaiton. The SFP has to be on a specific magnification set by the manufacturer to use the reticle for ranging. That can be a pain in the rear if that magnification is like 10x and you're ranging prarie dogs at 1 mile or whatever. The Trijicon 5-20x was made to use the reticle for range estimation on max power though, so it is possible Vortex did the same thing.
A buddy has the 6-24 IOR Valdada FFP with MP8 reticle and it is nice, just large. I wish the posts and hashes were 1/4 the size they are. It has a tiny floating dot in the center that is awesome though, but I don't like the rest of the reticle due to it's size. Awesome scope though. Anyway, hope I helped.