Not had experience of them in any formal engagemen...

Not had experience of them in any formal engagement, but in public one of their QCs became very quickly abusive and offensive towards me which I thought was a strange and unbecoming way to conduct themselves.

So I would never be able to recommend them, and would positively avoid them on that basis alone - if that's demonstrative of their manner, then that's the last person you'd want representing you in a more heated environment like a courtroom or legal dispute of any sort.