As indicated in a slightly earlier post on this thread I've contacted TDMtoraneko with a followup enquiry about the Tiger Screen, but having read through all the posts i thought I'd throw in some pics of how I beefed up my Eagle Screen for those who share similar concerns about the ability of the front cowl to support a larger screen.
This first pic is of the bike with the Eagle Screen fitted, which I asked to be be made a tad taller than the tallest stock screen available. Eagle were happy to oblige, but without any guarantee as to the strength of the front cowl to support it at speed. This was an aspect that worried me too, so I fabricated two struts to attach to the screen and onto the cowling next to the tank.

This shot is a closer one of the arrangement. The struts were made out of stainless steel flat bar and 1/4" solid round, and made the screen extremely strong and secure. No issues at all on a trip from Townsville, inland down to Adelaide at speeds of up to 140k through the Broken Hill stretch (everyone was doing 120k, so you had to do 140k to pass!), with a very strong head/side wind at one stage. The screen didn't flinch.

This shot was taken indoors today, as everything was stored away because of a cyclone alert. Fortunately it crossed the coast further south.
Shows the set-up in a bit more detail, but two things are different. You'll see that the left hand rod now has a bow in it (as has the right)which I had to insert to provide clearance for the handguards I put on after the Adelaide trip, having nearly frozen up during one very cold morning on the way down. Simply a matter of bending up the U, cutting the brace and welding it in.
You'll also see an addition to the top of the screen now, which was a bit of an experiment in view of the fact that I was still getting a slight buffeting over the top of the screen. I took the idea off the Vario screen approach. It's pretty basic, again made out of stainless steel flat bar, to which is bolted a piece of 1/4' polycarbonate. It resolved the problem

This last shot is just another one from a different angle.

I thought this might provide some food for thought for those with taller screens. However, even though the arrangement works well in terms of frontal buffeting I still get an annoying level of wind noise which I've narrowed down to the fact that the screen is not wide enough, because when I take my hand off the handlebars and cross them across my chest (very briefly!) the wind noise really drops off and all I then hear is engine noise, which is as it should be. Hence the interest in the Tiger Screen, but even if I go down that path I'd still opt for the extra bracing for the very real sense of security it offers. With the addition of a cross brace it could also provide an attachment point for other things -eg GPS, Tom Tom, small bag.
Anyway, that's it for me for the moment.
Cheers from Down Under.
John R