Well I've finally seen sense and decided that the Warrior AS holster is probably the best universal holster available at a reasonable price.
I took a much closer look at it, and although I still prefer a gun slide to be completely covered for aesthetic reasons, I have to admit that it is a very secure system and doesn't look as bad as I thought it would.
I didn't realise that it was a thumb operated active retention holster and I hadn't realised how cleverly it is put together in order to adapt to many gun types. I like the Blackhawk Omnivore but it is an ugly big lump and nearly 60 quid in the UK.
I still like the 1Tigris and other soft holsters, but I have heard they have a tendency to lose mags when the user is forced into tight positions.