I finally managed to switch things around in my personal practice, and it was both easier and harder than I thought. I didn't do everyting completely in reverse, of course, but after my warm-up sequences (sun salutation and moon salutation), I then went to my inversions, followed by floor work (cobra, pigeon, etc) lying down, then poses on the back, followed by my seated poses (forward bends and twists), then kneeling and then my standing sequence. I still did each section in the usual order, however.
The hardest part (after getting through the mental block of actually changing the practice) was remembering what poses I needed to do next. I definately had to pause after finishing each "section" and figure out which section to do next. I could feel my natural inclination to move into what I usually do - the yogic equivalent of autopilot!
I also definately noticed a difference in certain poses. The poses that I usually do at the end (when I'm starting to get tired) where much easier and the standing poses definately felt a bit harder.
On the whole, changing things around was not as difficult as I had thought. There was more of a mental difficulty than physical and that had more to do with remembering how to get my entire practice in. On a positive side, this definately took me out of the "auto-pilot" mode and really made me focus on what I was working on.
Changing up now and then seems to be a good thing, then, more for the mental aspect than the physical. I think I'll be switching things around as time goes on. Maybe not a complete reversal again, but perhaps starting out with the forward bends before doing the standing ones, or starting with an inversion, etc. Just something to shake things up and remind me to keep focused!