I have a 7.5" w/o sights and a 10" with and I do like the nice clean look of the gun w/o sights but it would hurt the resale value, should you ever choose to sell it. The gun can always be sent back to get a sight installed too. I would prob go with at least the front sight installed if I was ordering a 7.5" gun.

Here is one w/o iron sights.