Mario,
I like the clean sweep as it saves a lot of cleanup and dust been thrown around. The grey parts are plastic, the front and back doors are powder-coated steel. I'd say it would be difficult to access the router once it is in place. I use the router lift prestige with a Dewalt plunge router and the Musclechuck so I don't ever go underneath the table unless I need to alter the router speed. If operating without dust extraction and the blast gate closed it says to keep the door fully open to avoid overheating the motor of the router.
I'm not sure the CleanSweep will fit the Excel II as you have the crank for height adjustment underneath the table, also looking at the pictures it looks like there are some aluminium stiffeners right about where the CleanSweep would mount. I'm sure I saw somewhere the Excell II comes with a dust shroud mounted underneath the table (not fully enclosed) that can connect up to a dust extraction?
Seth,
The Clear cut guide fit in either the gold track or in the black track on the moveable fences.
The swinging guard comes as part of the Mite-R-Slide II accessory. The fixed guard is supplied with the standard fence.
If you take off the black vac port on the back there's just a big square hole in the aluminium. So, there'd be no metal that you could tap to bolt the Incra steel bracket to. Also, you'd need a thicker plate to lift the Incra higher so the steel bracket cleared the aluminium extrusion on the Jessem if that makes sense.
Hope that helps. But let me know if you have any further questions as I know how hard it is trying to find information.