Hi mate,
Short answer - yes it made a difference.
There's a 2nd gear chicane at Goodwood, and I was finding that when managing the car in on the brakes I was pushing the shifter across into the reverse slot and trying to pull backward. Not terminal as obviously there's no gear to pull backward into, but it did result in effectively a moment of fucking about trying to get it into second. I was able to finesse this by consciously thinking how hard I was pushing it across the gate into second, but ultimately yes it was something I was managing.
This issue was resolved with the lockout shifter, BUT I doubt I'd have had it again as I also subsequently fitted the 4.1 Final drive, and the chicane at Goodwood is now a 3rd gear situation anyway :lol:
To be honest I think very few tracks in the UK would now necessitate a change into second (maybe Llandau, or some of the smaller similar circuits, but nothing I've been on).
So basically if you think you're going to be hitting 2nd lots on your trackdays, then the lockout shifter might be a good shout. Alternatively given the price differential you might be happy to manage around it with the non-lockout!
As a point of note, the return spring for the non-lockout shifter and the lockout shifter are both identical. So the lateral effort required will be identical. The Lockout mechanism works by having grub screws which you set to block the lateral travel of the shifter unless the collar is pulled up. This means you can chuck the lever as hard as you want laterally and it physically will not be able to get across into the reverse gate unless the collar is pulled up.
The lockout mech is effectively identical in concept/operation with the coolerworx and CAE shifters, give it a google and you can see how it works
EDIT: Here's the actual RTD video showing the operation:
[youtube]ZE4SjQ89DB8[/youtube]