That scope thing is pretty much a myth in my opinion. The reason any gun tears up scopes is because it has a problem. Ring placement, ring design, loose screws, malfunctioning piston seals, leaking breech seals, all can lead to situations that may cause a scope to fail. If the gun is shooting smoothly and everythings working well, the scope should last a long time. There are scopes that are specifically made for airguns, with specially reinforced reticles etc, but its not absolutely neccessary.
The RWS 54 has a reputation of killing scopes, but I've had mine 3 years, so far it has not broken the scope. Its tuned and tuned well, and the firing cycle is much smoother. So, not so hard on the scope.
I think that that R-9 is probably a high-end model or custom gun, either with a Beeman shop tune or maybe a good aftermarket tune. If so, I wouldn't worry about the scope. Those scopes I mentioned do work fine on airguns. I had a Bushnell 4-12x40 on a Beeman S1 for a while, then on an R-10, A Diana 27, a BSF 55, and finally now its on a Rutten Winstar Mach 1 DE. All of these except for the Diana 27 are high power airguns. The S1 has a particularly nasty kick, and the BSF has a very strong spring with a hard recoil, both are said to be hard on scopes. The Bushnell is 4 years old now and has survived all these guns so far.
The Simmons is a 4x32 Wild Turkey Federation shotgun model. Its been on my Webley Xocet for quite some time now, a year or so and maybe 2000 shots later its still fine and I've only had to make minor adjustments.
The BSA is somewhere (?). I don't remember which gun its on, I've got several dozen in various places. Its about a year old now, its been on a couple guns and used quite a bit and it still works.
Any decent scope will work. There are scopes to avoid, like the $20 Daisy and Crosman stuff, and Tascos too. If the time comes when you want to spend a few $$$ on a decent higher end scope, the Leupold 3-9x33AO is about the best deal going. I got one for $265 from Natchez and its now on my R10. Its got to be the best small airgun scope out there.