I'd open 2
♣ on this hand. I've found that opening 2
♣ on strong one-suiters works well. It's the two suited hands (especially if a minor suit is longest) where you are often better off to open one. This is for three reasons, first because two suiters (or three suiters) take more space to accurately describe, second because two suiters don't guarantee a fit (and are a lot weaker if the hand's a real misfit), and third because with a one-suited hand after 1X-response you often have to either lie or jump to a ridiculous level to let partner know what you hold (whereas with a two-suiter it's easy to reverse or jump shift).
I expect to make game easily opposite as little as:
xxxx
QJxxx
x
xxx
Heck this hand might make game:
xx
xxxxxx
xx
xxx
I don't expect partner to bid over 1
♦ with stuff like this (maybe because I don't partner with Justin, looking at another thread

)
One of the concerns with a 2
♣ opening is that partner will force to game with a king. Beginners often think "if there's a hand with just a king where game makes, I better bid 2
♣ so we don't miss it" but you also have to take into account the hands where responder has the "wrong king" and you end up in a bad game. But here, if partner has the
♥K 3NT will be easy and with any other king 5
♦ will be excellent.
As for the risk that partner declares an eventual diamond contract... I have a solid suit and ace-empty in two side suits. I
want partner to declare. "Wrong-side" the diamonds?? Excellent.
Adam W. Meyerson
a.k.a. Appeal Without Merit