Almost every south will open 1♠. Those that playing a forcing NT might have a difficult time on this board after south bids 2♣ (better minor). The danger of showing the hearts, is that it will often show a 6 card suit and 2♠ might be a better contract with 2 card support (when south could have 0 or 1 hearts). However the modern game leads to modern gadgets and some will find 2♥, which is the best contract.
Many will respond with a non-forcing 1NT and that's where they will play. At imps, it's certainly a good contract and will make.

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