On One Macinato or keep my Kinesis?

^^^ meh.

I stand by all of my earlier points.

But in addition:

• Kinesis are just as British as On-One.
  
• Kinesis have more experience in designing bikes
  
• The trickle down tech of the T2 > than the Macinato (which is just a pompino with the useful bits removed).
  
• You can buy a good road wheelset, use a tensioner, and space the cogs, leaving you with a fully re-usable road wheelset for no extra cost.
  
• Chain tensioners aren't that expensive and will be a useful part to have in your spares box if you stop using it.
  
• The only benefits of trackends for SS are that it 'looks better', and is cheaper than using a spacer kit and tensioner.
  
• steel is not inherently better, and it's not like the on-one are even made out of a mid to upper end tubeset, so I don't really think that it comes into it.
  
  

@ Kinesis -

Personally, I'd have two bikes, as the T2 will build into a nice all round road bike. If you only have the money to have one for now, build the T2 as an SS. If you buy the right crank, then you'll only need shifters, gears and cables.

Lots of people are happy with their on-ones, but from what I can see the T2 is just simply a 'better' frameset than the Macinato.

Ultimately, just do what you want.