It does seem to recognize Enduro, but as it doesn't support X.org 1.13 "undefined symbol: noXFree86DRIExtension" I only played a bit with aticonfig and the switch scripts.
Now I can't use the HDMI port at the intel graphics anymore, not even on windows (????) but DVI still works.
edit: Ok, I booted 3.7-rc2 and as usual (I really need to report this) I got a kernel panic / got stuck on my switcheroo autorun script but since then HDMI worked again. I'm not sure I really can trust that flaky hardware...
[ 8748.577502] AMD IOMMUv2 driver by Joerg Roedel <firstname.lastname@example.org>
[ 8748.577507] AMD IOMMUv2 functionality not available on this system
[ 8748.651020] fglrx: module license 'Proprietary. (C) 2002 - ATI Technologies, Starnberg, GERMANY' taints kernel.
[ 8748.651027] Disabling lock debugging due to kernel taint
[ 8748.660535] <6>[fglrx] Maximum main memory to use for locked dma buffers: 31415 MBytes.
[ 8748.660896] <6>[fglrx] vendor: 1002 device: 6800 count: 1
[ 8748.661315] <6>[fglrx] ioport: bar 4, base 0xe000, size: 0x100
[ 8748.661460] <6>[fglrx] Kernel PAT support is enabled
[ 8748.661487] <6>[fglrx] module loaded - fglrx 9.0.2 [Sep 28 2012] with 1 minors