[quote=@Inkarnate]
<Snipped quote by Dervish>
Hard to say, but for example I'll use myself. I can be inconsistent, have slow pacing, and ultimately a lot of my games falter due to a lack of focus. I would be straight up with those flaws I hold if asked about what they can expect from me as a GM. I have no reason to hide it; it serves little purpose when people can look around at the base examples. 
[/quote]

There's so many variations of people that your way is but one, and I'm not even sure a very common one.

Yes, you can ask, but sometimes seeing track records is the only way to get a true image of how one operates. Having roleplayed with said GM helps too sometimes, but perhaps not often :p