jillybean, on 2011-May-27, 18:05, said:
I picked up this approach of bidding 1
♠ with only 4 after 1m (1
♥)from Ben in Orlando. I like it, I find it a lot easier
to picture partners hand after 1m (1
♥) X.
I am playing it with my regular partner but other than that, there is a lot of resistance to it here. I can say I like it but I haven't had much experience with it. Could someone please list the benefits so I can sound somewhat like I know what I'm talking about when I discuss it with other partners?

First, the downside: people like to distinguish between having 5+ spades and 4 only spades when the auction is going competitive. I like that, too, but give the benefit up because;
There are many hands which wanted to respond 1NT or more NT but don't have a heart stop, wanted to respond 1H with 4 small and don't like bidding 1NT, or have length in the other minor and otherwise would have an uncomfortable response, were it not for the 1H interference. These are the hands which gain from double denying spades (or 1 spade denying spades, as some play it).