Personally I'm leaning on no.

Initial potency is 100 which can crit.

Potency per tick is 20 and there are 6 ticks leading to 120.

Now shield swipe is 210 ._.

Honestly, I don't think it's really worth the time to use fracture at all.

Aggro wise, after it's DoTs, it totals up to 600 (with shield oath, source: http://valk.dancing-mad.com/?page_id=231). This is the same amount of aggro generation that a non combo'd savage blade would provide.

Thoughts and opinions?