"If I use OLCI without and e-ticket do i have to go and use the lengthy check-in with the WT and WT+ passengers?"

Nope, you can use the Fast Bag drop / Self Service ( or even the Skyflyers desk as normal )

"The flight I am on looks pretty full at the moment and I have heard WT+ to CW up****es are common. As I am travelling in sportsjacket and button upshirt (due to plans post arrival at Dulles) I am thinking despite having chuff all status there is a semi chance of getting an up****e. [b]If I use OLCI and SS machine / fast bag drop will I blow my chances of this happening?"

I doubt it will, in fact I know someone who got an upgrade at the gate from WT+ to CW earlier this week after using OLCI

Dave