I changed my seals on my bombers the other week to these m arch ones and they are fine. The outer is slightly different but other than that they fit and work no problem. Beautiful forks IMO.
The seal tool really helps to fit the seals, in fact it took all of 30 seconds to install, about an hour to remove!!!!
Also they are a pain to remove, the outer ones you have to careful as the m arch ones do not cover as much of the fork as the bomber ones so any scratches caused whilst removing will stick out. Also the ones inside the fork, mine had perished and were more difficult, took an age to get them out, they really are a nightmare to remove; well they were for me.