Based completely on user feedback of the incredibly successful Version 1 (V1), I have now completed and tested my creatively named Version 2 (V2), and it’s for purchase here
You asked, and I answered. The V2 now incorporated a fixing for an additional phone holder to add flexibility to the Wattbike compatible dual-screen solution. This will enable you to swap between a phone (either landscape or portrait) and a device or tablet at will!
Wattbike Compatible dual screen with landscape phone 
Wattbike Compatible dual screen with portrait phone 
Wattbike Compatible dual screen with tablet
The phone holder is an additional purchase, so if you don’t require it, you still can benefit from the V2 improved features such as 200m more height for larger devices or tablets and slightly improved gripping strength from minor adjustments to the clamping (not that the V1 performed badly in that dept.)
If you have the V1, and don’t require the phone option, then there’s no real-life benefit to upgrade. If you want to upgrade anyway, then contact me for a generous discount code for existing customers.
Happy Wattbiking!
Ian