Custom Stainless Road Bike

Just had a look- Rourke's site is shit!

That's hand built, not custom- there is a difference, although obviously not a huge one if your goals are met by the hand built frame.

Getting that Rourke frame drilled for Di2, 44mm head tube and an extended head tube would see the costs escalate pretty rapidly

Rourke frames not custom???
Of course they are - they measure you up for hours and every frame is built to your measurements - if that's not custom what is?