In that particular case it doesn't really matter much. Here's why;
The sight is rounded so far down that you'd not be able to take enough of it down to end up with a different style of sight.
I like a flat face toward the shooter, a sharp corner at the top, rounding down and away in front. That prevents nearly all chance of reflections distorting your sight picture. It's also a little problematic when drawing from a holster, should the sharp corner at the top come in contact with leather. That rounded sight is a compromise, favoring easier holstering and un-holstering at the expense of a sharp sight picture. See photo, though you can see I rounded it a bit at the back for holstering purposes. More compromise.
You don't really have that option, unless you were to replace the sight altogether, or file a big notch in the back of it.
I'd file it straight down flat, with a slight angle to it so it falls away slightly in front, and leave it at that. It'll still work fine in a holster and actually give you a slightly better sight picture, as far as glare is concerned, than the unaltered sight provides. Better yet would be to install an orange insert, but that's getting a lot more technical. I've found that the stainless-on-stainless can be hard to see, and so I'd be sooting up that front sight every time I took it out shooting.