Including selectivizr.js is causing IE8 to not display/render anything at all, but IE8 in IETester manages.
It also downloads everything, I can see that in the activity
If this issue is related to the font-face problem with selectivizr I have created a pull request to fix this issue in our situation, basically it ignores the urls that don't contain '.css'. This fixed our WSOD issue. Its available here:
https://github.com/JohnCashBB/selectivizr