After some test last night Blood & Thunder and Thunderstruck have turned out pretty tricky to use, to say the least.
If you open with Rend and then wait a full cd to TC, chances are, you will loose aggro on your main target. Same thing if you wait a full 20 secs before using SW to have time to stack 3 TS charges.
On packs, the best strategy for me was to open with SW, Rend while mobs were stunned, TC and then SS my main target. After that, it was safer to stack TS before SW was off cd again.
But still, i'm not sure those talent points are worth it: complicated mechanics with no clear avantage over using TC and SW plain and simple. Wasting 2 cd to apply a weak Bloodbath is just not worth it. As for TS, the cd of Tc is just too long (6 secs) to make it efficient.
All in all, I'd say b&T and TS work against something all warriors are happy with: snap aoe aggro