I respect the Cytronex and was just using it as an example, but it's not a fully functional bike for anything other than a little pleasure riding. Even commuting needs locks and toolkit at least. If the kit that was mentioned by Mussels is added, it's still about 26 kilos which is a 53% weight increase!
The same sort of thing applies to any light stripped bike if it's needed to do a variety of serious work rather than be a pleasure bike. Obviously there are individual preferences, but most would prefer to have mudguards, plus tyres as puncture proof as possible.
.
Well this is splitting hairs a bit but:
kryptonite lock - 3Kg - leave at work so no need to carry.
the rack - 700g - say 500g for a good light one
the panniers - 2Kg - these are mighty heavy panniers - one side of the heavy duty Ortileb Roller Classic = 775g would be ample for most commuting
the sat nav - 300g - Really, personally I can remember my way to work.
the bike pump - 250g - OK
the tool kit - 1Kg - Can't imagine mine is this heavy but OK.
the lights - 500g - already included in bike weight
the winter wear - 2Kg - well, we do neet to wear clothes, not sure that is fair to include in the bike weight.
And if you must have them, mudguards at 500g
So I make that about an extra 4kg making 21kg total for the bike. I don't own a Cytronex but I really think the bike is just as suited for commuting as any of the other ebikes given a suitable match with rider. I have a Cytronex inspired bike and it is built primarily for commuting, not for fun. My only real concern is the long term reliability but the Cytronex appears good so far.
While it is not a typical ebike I think it is a very practical machine that is too readily dissmissed. It is clearly far from perfect and clearly not for everybody but I really don't see why it can't be a commuter while still weighing less than much of the competition.
I see many cyclists commuting along my route and none of them (well the ones who cycle further out) have 9 or 10 kg or extra stuff on their bikes. In fact, my boss cycles to work most days and his bike is sub 8.5kg all in. Granted, not an ebike. He has a lock that weighs almost as much of the bike but that is just kept on the railings outside work. He does not bother with a toolkit, walks if the bike breaks as its only 8 miles - at most 4 miles home to pick up the car or 4 miles into work.
Cheers, BM.