The 1010 has a colossal design flaw = the fact that the power cable, handle and dust extraction hose all exit the machine at 90 degrees to the plane of the parallel fence. So - when attempting a job as basic as routing hinge rebates on the jambs of an in-situ door frame, you can't get the machine anywhere near the top of the frame before the aforementioned parts all hit the head rail. And reversing the position of the fence to rout from the other edge of the frame? Same problem - but everything just hits the floor instead. And what's with the ludicrous oval dust port? Terrible, flimsy, overpriced product.
The 1010 was my favourite router for routing hinge rebates in in-situ doorframes, but I always use a routing template for that. If the parallel fence was to be mounted like you suggest, it would be awkward to use on the guiderail.
My major gripe with it was that it has no quick change for the copyrings. Some templates I used on doorframes were to be used with a 17mm guide bushing and a 12mm bit, and others with a 24mm guidebushing and an 18mm bit. Having to use the centring mandrel everytime you change a guidebushing gets old really fast.