He's good. Royal Shakespeare dudes are always good.
Beyond that, there isn't much to say. Never had tea with the guy. Could be a total douche. Could be an awesome dude. He's the best thing in Penny Dreadful, I think, which is impressive because that show's full of good things.
How about Rory Calhoun, am I right?
Short Answer: When Lita Baron sued for divorce, she claimed that Rory Calhoun had 79 adulterous relationships! That dude got it wet!
Note: Just watched the most recent episode of Penny Dreadful. Almost positive it's the reason this question was asked, because Rory fucking killed it from front to back. Worthy of attention. Made me cry multiple times.