What about pocket carry? I wear tight jeans every day but I can carry good-sized things in my pockets. A long object sits in my pocket at an angle and isn't a problem when I sit down. I've thought about a FB knife in my pocket and I think I can go to 6.5" overall length without a problem. A 3.5-3.75" handle is sufficient so that still leaves almost 3" available for blade. Now I need to find something that fits those limits. TOPS makes 3 or 4 that might work, all for under $100, such as the UTE.
+1
I often pocket carry a small fixed blade (for utility, not self defense). I use a leather hip pocket sheath from KSF, and its flat, wallet-like shape stays upright in either a front or rear pocket.