So they stock the M type which seems OK with most people. I suppose it's OK with me too, that's what I've been using almost every day since October.
The whole thing makes sense to me, I keep spares for three different ones. The S types both use the same cables. My M type is an old short wheel base. I have three different types of back wheel running just now... and three different types of front wheel too.
Of course I don't need to worry about the colour.
If they could cut down the delivery time for non standard models it would cheer up a lot of people. I think some of it is down to their market getting bigger and it takes time to train up staff. Mine are all fairly standard black ones. The first one came from BikeTrax and took a couple of weeks to arrive. The other two were from Evans and arrived in a couple of days. Evans claimed to know nothing of Schwalbe tyres and presta tubes so I just took them with standard Brompton tyres and swapped them later.