^yea, in my experience it felt weird for about half of the first season. I'm sure a fair bit was mental.
As for skiing aggressively, don't jump into it too quick. Even if your major muscle groups are fit, skiing takes coordination and proprioception that you only rebuild by skiing. If you jump into it to quickly, you're likely to put your knee in a compromised position. Skiing is the best rehab for skiing, so I'd treat it like the rest of rehab: build up the intensity slowly and let your body get used to it.
9 months is still a pretty quick recovery. The 6 months figure that gets thrown around is based on the time for the new ligament solidifying into the bone, not on regaining functional ability to use your knee. 9 to 12 months was the number I was told both by my surgeon and the PT I worked with (who worked with athletes, not geriatrics).