She was zooming around the apartment when I snapped this: you can see the excitement in her features, she was giggling and running. While she does crawl now, she is far more happy running in her walker or standing the majority of the time. Actually I probably should show you a video of her "crawling" because she doesn't do it the normal way, where you have both knees down, but generally has one side pushing off from the bottom of her foot and the other side on her knee. It's less efficient but I think it's more satisfying fo rher because she's craving walking, where you push off feet not knees, instead of craving crawling. She may learn more efficient crawling or it may be the best it gets and she will instead focus on walking. I wouldn't be surprised.
(By the way, for those who are concerned for safety of walkers, we have no stairs in our apartment, we've removed the floor rugs from the rooms she uses it in, and it's never even shown the slightest instability to indicate it'd flip over. I did look into safety before we got it and found in places where it was banned it was totally because of multi-story living spaces and the safety advice that came with the walker itself was simply the remove all area rugs. She's been using it for two months without even the indication of a safety incident, aside from grabbing stuff she gained new access to which obviously would happen anyway as she gets more mobile and falls under normal parameters of parental vigilance.)