I tried it in PVE today, since I had to go out for when ES started, I managed to see first damage. I'd mostly do around 3.8m-4m and with tenjiro I've done 4.3. my PVE formation is (cute orihime - tenjiro - main - ikkaku - sexy) and level 83 with this formation I have 410k bp, bankai zabimaru, with triple crown title. (not sure if I should switch to (eagle eye raider %20 hit %5 break def) from (triple crown champ. %20 crit. chance)) so you can guess a little how he helps I think. if I had chance to watch him I'd give more informationed entry here
again in ryoka my first attack was 4.3m, yesterday I did 1hit in the first attack of ryoka, with rukia + c.orihime + sexy yoru + ikkaku, ikkaku going last, hits his skill everytime, but in single damage tenjiro has around 300k damage, tomorrow will try both ways in ES
me again, last entry for now yesterday with rukia instead of tenjiro I managed to get 450m total damage in ryoka, now I am at 400m. so I would just say if you have at least 1 person using skill everyround stick with him, but otherwise this dude is better, this is my opinion. gotta try in ES for better results