We are just selling our three bed shared ownership!
We are just waiting for the approval for the new buyers to go through with the housing association. It was put on the market less than two weeks ago.
The good points for us were that when we bought 7 years ago we would have got a mortgage for a 2 bed flat locally (SE), but really wanted a house with one DC and another in the pipeline. It has meant that over the past few years our combined mortgage and rent have cost us less PCM than if we were just renting the property, and now we are selling we have made a small profit to put into the next house. Like renting, it has felt like ours, we could redecorate etc as we chose, we were secure- no risk of LL selling up.
The bad points were the layout downstairs doesn't really make the most of the space for our family- the kitchen is tiny to accommodate a disabled size downstairs loo, to comply with planning regs (apparently). We couldn't change that.
Selling up isn't as simple as usual. We had to pay out for an independent surveyor to value the house then that price was final, no haggling, it was the price it would be marketed for. We have had to use a third party agent decided by the HA who don't come out and do viewings etc, they hadn't actually got round to coming out and taking pictures, they used a couple off my iPhone. We are still having to pay them the going rate for an agent 1%+VAT. It is costing us slightly more in solicitors fees as s.o isn't as straight forward for them to do.
Overall i would do it again in the same circumstances.