Sorry Martin, as much as I'd lie to agree with you, I have to disagree with you on this one.
Riding with friends on bridleways and cycle paths aside, the fact of the matter is that 'NO' e-mtb's have not become acceptable in the sense of the word in relation to other mtb users, which you appeared to be angling at..
E-bikes as whole aren't yet readily accepted in the UK and I seriously doubt that they ever will be. The e-mtb scene is no different in this respect. The UK public just isn't open minded enough.
How many e-mtb's are being used in a competitive nature or entering organised mtb events on their bikes. Myself aside, I don't know of any and I can see why.
At the two Wiggle events the BH hardly raised any interest because of it's low key appearance, positive comments were given by several 'older' riders, and only a few tongue in cheek adverse comments were made. Wiggle can't really say too much as a company, as they are authorised Haibike e-mtb dealers.
The UK Cycling Events solely operated ride that I entered using the Haibike was completely different. This started as soon as the bike was taken from the van. The reception was very frosty from the outset and almost everyone was negative towards the bike being battery powered. I lost count of how many people shouted adverse comments during the ride, and I gave up even responding. The Haibike stuck out like a sore thumb, which is clearly the reason for the reactions. No way can you possible say that e-mtb's are accepted.
I'll have to wait and see what reaction I get at the next Evans organised e-mtb ride.
I'd be more than happy for you prove me wrong by seeing you enter either of these two events, and not come away after either being refused a start or by being hounded with abuse. The events chosen for close proximity purposes only.
http://www.brightonbigdog.com/
http://www.gorrick.com/index.php
Even the magazines are taking notice too!
In reference to the mtb mags, what you have forgotten to mention with this statement is that yes MTB magazines are starting to review e-mtbs, but without fail, all follow up letters by readers are negative, and pretty much all forum threads relating to these reviews are also very negative and aggressive. Even to the degree of one forum member threatening to kick any e-mtb riders from their bike if they ever saw one on the trails.
Feed back from lads that regularly use parks such as Afan, all make it quite clear that e-mtbs aren't welcome.
Again you could prove me wrong in this respect by posting up a photo etc of the above bike on each of the following forums, in the readers rides or thinking of buying topic headings.. I again can sadly pretty much guarantee that you will be wishing that you hadn't. Trust me I have tried.
Chosen because of their magazine connections
http://www.bikeradar.com/forums/viewforum.php?f=40058
http://www.mbr.co.uk/forums/
Chosen because the mtb connection .
http://www.mtbe.co.uk/
http://singletrackworld.com/forum/forum/bike-chat
.