I have also used microsol over bare alclad airframe allu....just be very carefull to work only on the decals and not to flood the surounding area.
Remember that the alclad range of clearcoats need to be (just like the alclads) put on in thin coats. Just till it looks wet then I stop.
I actually use the same clear as my gloss coat over enamels for decaling.
Usually 2-3 coats then I sand with 6000 to get a very smooth surface.
The same alclad semi matt clear is then used as my final coat for all other models over decals.
I am a cheap scate when it comes to models! I got 2 bottles of alclad clear semi matt.
If youleave the stuff for a few days the matting base sinks down.
I then carefully decanted the clear gloss to have a few ranges of clears from matt , semi matt, sheen amd totally gloss.
This stuff goes really far if used correctly.
Here in SA it is rather expensive, about the same as a nice 1/72 kit, so I can not afford to have a whole string of different paints, I mix my own.
Even the Alclad for the airframes .I only have airframe, pollished and dark allu.
I use a gloss enamel for the base and then the airframe allu gives a really nice , but not chrome looking shine. I shoot 3 coats to get an overall dark allu appearence, mask off some pannels and then shoot 3 more coats.
This gives a nice tone /shade without being to "over the top"......all for the price of 1 bottle :-)
Theuns