4099 Core Guitar : A great mic BUT...

I recently bought this mic for my classical guitar live performances. I usually perform with an amp and a looper in streets and venues, I hoped that with this mic I would have a better quality sound of my guitar because the di sound it's a bit weird to my ears. The sound quality is spectacular and I recently used this mic in the studio to record a new song of mine and I am very happy with the result, BUT. When I tried to rehearse with my live setup I found out that the mic isn't as directional as they market it, also the feedback was too much in most of the venues and stages. I think it's a very good mic to use as a Solo Concert mic and not for looping or very crowded and loud venues. Plus I still use it as a studio mic to record short videos for my Instagram and my compositions.