yes, standard procedure. think of the comments forum as marketing. nothing wrong with blowing your own horn. and the gallery forum is for showing sneak peaks, getting some help and advice and just plain showing off.
you'll often see a filter result show up in the gallery first, without the filter and then the filter will show up later in the comments forum after it's been submitted and approved.
i started the user gallery way back. i just wanted to show some things off. vlad added the comments gallery and then later a more formal gallery, stickied.
the gallery is more about the end result of a filter. the comments one is more about the filter itself.
If wishes were horses... there'd be a whole lot of horse crap to clean up!
Craig