I'm swimming against the current here, but I wouldn't carry the 710 in an office environment. The other day I was waiting for my son outside of his high school for him to finish track practice. I cut up an orange for him with my 710 thinking I hope the school cop doesn't see me and have an issue. I am also thinking that I shouldn't have to worry about that, but still trying to be discreet and sort of hide what I'm doing.
My point is that I wouldn't have worried, had I brought an SAK that day. Under no circumstances would I pull the 710 out of my pants in the office. You are just asking for trouble IMHO -- even if it is legal.
From a practical standpoint, I think the 710 is a little big for dress pants. I like a Kershaw Leek or maybe a Bradley Alias II for that. Even then, I'm careful about it. The last couple of times I've used a knife in the office world, I held it half-open concealed in my hand.
Heck, I remember a lady getting upset about a coworker's serrated ladybug....