 mr1303, on 2016-July-26, 01:54, said:
mr1303, on 2016-July-26, 01:54, said:
Basically, if I want to force to game opposite a 2344 10-11 count, I bid 646. If not, I bid 664.
Hand 1 would be a 646 hand, hand 2 a 664 hand.
Yes. 
If the hand is to be played at they 2 level, playing it in spades should be fine, either hand. But after 1S-1NT-2H partner might well bid 2NT and I have to be prepared for that. We are not playing this hand in NT, so I will be bidding 3S.  If I do not want to do this, I should have started by rebidding my spades. It shows my weakness, it shows six spades, and it leaves open the option of a non-forcing 3H if partner tries 2NT over 2S. And a 2NT rebid is less likely over my 2S than it is over a less limited call of 2H.  In NT they can knock out the diamond ace on the opening lead and hold up on the spade ace, making the S hand worthless. We are not playing this in NT unless partner really insists. 
I know you effectively said this already.  I'm just agreeing. And yes, hand 1 is worth the gamble so 2H, while on hand 2 I rebid 2S.