Agree with the above post. I alternate between an office and various plant/mill jobsites around the country. Where I live and in my office, the size of your knife isn't an issue; however, I find the blade length of the 710 to be too much for normal everyday use, even as slim as it carries. If my job consisted of warehouse work and breaking down boxes all day, yeah I'd want a bigger blade, bigger handle knife like a 710. I even find the 940 to be too much blade sometimes for most tasks. If we're talking strictly Benchmade, I think the best all around EDC is the Ritter mini due to weight, ergos, and blade shape. 707 isn't far behind, but it's just not that comfortable in hand.
Though I say all this with a Sebenza 25 in my pocket right now and most days I'm carrying a large 21. For most things I think they're overkill and my small 21 would work just fine, but most of us admit that we like having the bigger knives on us for the cool factor and they're more fun to play with and fondle during moments of downtime at work.
I've much more important things to worry about than a stranger's fear of inanimate objects. If I'm within local laws or a facility's policy, then it's really no one else's business. People who make it their business are just opening themselves up to a lot of smartass comments back at them from me.