Belt or strong-side carry...
I don't own any SR format pistols right now but a good carry holster that fits the Ruger SR compact is the leather Wright Leather Works Predator.
It's available in 4 color choices, has a side body-shield & a metal band to aid one-handed holstering.
Wright is a high quality brand & you may need to wait a few weeks for delivery but the prices are fair.
Other good brands include; Don Hume, Galco, Safariland, Ted Blocker, Blade-Tech, Milt Sparks, Alessi, High Noon Holsters, Mernickle, El Paso Saddlery, Bianchi-intl.