HAHAHA .... Yes I do this. Why? Because it sure beats carrying around a big heavy pack of wet wipes. Plus, wet wipes just redistribute the shit to other parts of their body - it doesn't actually get it off. Lastly, have *any* of you tried cleaning a baby girl? Shit gets into *every* nook and cranny. I can spend 5 minutes and 2 dozen wipes, or 10 seconds under the faucet. But.. Luckily for us, we potty trained our baby girl pretty much from birth to shit in the crapper. She's a year old now and she's probably only soiled her diaper a dozen times in her life time, so it hasn't been much of an issue. ANYWAY...
Now, having said that, I will not do this in a shared public bathroom. I usually dive into one of the family bathrooms or I'll only do it in the case of a single, lockable bathroom. I think washing your kids ass in the sink in front of others is wrong. Plus there's way too many weirdos/sickos/pervs hanging in the bathroom, so no thanks.
You have a couple of photos that are great... you must be very good at photoshop!