An excellent fixed blade for the occasion, Cold Steel Kobun:>
The price can’t be beat either. It’s very light and thin. Carrying concealed might be a challenge..boot knife would work, deep pockets, or behind pelvic bone at back clipped to belt.
I would never second guess a knife expert, because it is just the most personal choice they make. I was lucky enough to see a real master at work once, doing his version of a martial arts kata, and it was just awesome.
I have this one.. Cold Steel Vaquero Grande. Might add that Kobun, great price on that one.
http://www.coldsteel.com/vaqueroseries.html