I've had mine for a while now and I love it. Some of the larger things I've used it on have been lugnuts (from compact cars to F250 Super Duty), mower blades(1" bolts on a 60" zero turn), driving large lag screws etc. It obviously wont completely replace a pneumatic impact, but I tend to grab the Ryobi over my IR for quick projects, or most things under 19mm. It's also amazing for working on things away from the garage. Mine's been used at friend's houses, on the tractor out in the field, and helped someone change a spare on the side of the road (makes a scissor jack work amazing).
Couple things I've noticed with mine after using it; The LED lights come on before the anvil moves, and say on 7-10 seconds after you release the trigger. Great for working up under a vehicle or at night. Also the 3-speeds have been quite useful, especially when assembling things. Don't need full power when running 10mm bolts back in.
If you're thinking about it, I'd say go for it, especially if your invested in the Ryobi line.
~ Carson