Enjoy your new lens! I've used the 24-105 as my "general" lens on my 7D for about a year now, and it does a great job for pretty much everything: people, groups, action, travel, portraits, studio, whatever. I'm one of the people who always found the 17-55 range to be too short. Having tried the 24-105, I'd be very reluctant to go back to having only 55 mm as the longest length on my general lens. I guess it all depends on your shooting style and interests; I don't have much interest in landscape or architecture photography, and for the odd occasion where I need a wider angle, I have my Tokina 12-24 (which gets used about once a year). And for the record, I don't have plans to buy a full frame camera any time soon.
One of the great benefits of the 24-105 is that it offers a one-lens solution for many situations. It's long enough and wide enough to be very useful.