Moustache bars have a lot more reach than drop bars. So to feel comfortable with them you'll need a shorter reach stem
That's a very useful bit of info! If the reach is too long, I'll shorten it with the stem. I suspect this will work well for me. It seems that I like to vary my reach more than the drop.
I have these handlebars on one of my bikes. I had no preconceived notions of whether I'd like or dislike them. I found I love them. I tip them up very slightly, so they're nearly flat. I go way forward when climbing hard.