I never get much out of these videos because things do not behave in these games like they do in my average game. The mana regeneration rate in the one video was so quick I can't at all relate to it.
In the other video I watch as the Virtuoso walks calmly right by a shield guardian venatori and then just blasts him in the back. With me I would be on my ass getting hammered each time I got up.
Just can't relate.
This is not at all what I was going for when I started posting. All I wanted to do was clear up some incorrect "facts" about CB and provide a counterexample to the "CB sucks/PC or u r a scrub" mentality.
Seriously though, what do you do when you see four DD's around? You know they tend to spawn 2-3 at a time, and have up to 7+ at a time. I have a difficult time if I don't clear them immediately, and if I am unlucky with dodging the enemy ice mines I will have a very difficult time.
I use PC in situations like this. I have stated multiple times that I do use that skill, and that it is good. I tend to use PC against commanders, DD or ice mages, or when a group of mooks somehow make it to me without my having tagged them multiple times already. That's about it.
I also like to use killer set to trigger encores between casts, just as you do, only as a conscious choice within the playstyle.
I did not know this triggers encore. Very interesting... 
No one said you couldn't use PC btw. No level/gear/item restrictions. You can play 20 if you want. I just won't (because I promote). Obviously clearing faster with lower level is more impressive, but no restrictions except must be Perilous, solo, and the explaining context somewhere i.e. written details on map/faction/animals/gear/promotes/etc.
I'd also prefer if you cleared treasure rooms, but it is not required. Make notes on comparing whether you're clearing rooms or not. We can adjust for treasure room times if necessary.
So what is the point of this Thunderdome? Seeing as this spawned from a thread about CB that morphed into "PC is better than CB", it only seems logical that we stick to the abilities that we are championing. How did this turn into "My build and playstyle is better than yours"? I never said anything of the sort, and never implied anything of the sort. All I did was point out the Pros of CB over PC.
Treasure room clearing seems counter to the whole idea of a speedrun with 1 class. What is the point? We can't even open all the doors... and it's a speedrun. I doesn't make sense.
P.S. I was going to suggest level 5, but whatever. 