if one is really concerned about sheeple -
after all they are People - friends, family etc.

.......
then perhaps a knife that is easily recognizable and not normally regarded as an offensive weapon may be in order.
Taking into consideration of the description "gentleman" -
may I suggest the very slim aluminum handled 2 bladed SAKs?
Examples of some Very thin SAKs
left to right - Victorinox "Popular" (Swiss/international model # 0.6901.20), Wenger Patriot, older Victorinox Alox Bantam (w. Keyring - Swiss/international # 0.2301.26), Vic Alox Bantam (no keyring 0.2300.26)
How thin?
this photo displays life size on my monitor -
left to right Vic Popular ~3/16"; Wenger Patriot just shade over 3/16"; both Vic Alox Bantams ~7/32"
My top suggestion is the newly imported to the USA
Victorinox Alox Bantam - US model # 53949 with checked/cross-hatch finish about ~$13
Even more "gentlemanly" is the
Victorinox Silver Alox Secretary - US model #54289 - about ~$10
Even if you don't have these as your main EDC -
they are cheap enough and slim/thin enough, that you could also have one as a "backup",
or use when even your "other choice" may intimidate.....