There isn't one
single suit that will 'do it all', so IMO you have to think around the problem.......and the answer lies in layers.
An armoured vesty type thing........100 quid
This is the one I wore in Morocco a lot.....Dainese, but bought in a sale at 99 quid or so. (200 retail)
Under that, you
need a long sleeved wicking shirt.......something made out of 'technical' type material
that you can wash under a tap each night, wring out and wear dry the next morning.
OVER it, you can wear anything, or even nothing at all if it's really hot.
A thin fleecey long sleeved layer (technical material again) and a slightly thicker one, plus a goretex type layer, and you have pretty much ALL of the bases covered. and very inexpensively. (EDIT....and at hardly any volume either......in fact, having those extra layers that you can wear as evening casual gear works perfectly!)
Over the top of it all if it's minging weather, you can put on any jacket you like and are familiar with....just make sure you don't double up on armouring or you'll walk like you have a taser up your arse and the overlapping armour panels can be quite dangerous as well.
ONE SUIT WILL NOT DO IT ALL but a sensibly selected layered approach WILL, and it will be WAY cheaper and totally flexible for day to day use (bearing in mind you can be riding up above the snowline at midday then be in 40 degrees c heat at 4pm.
JMHO
ANOTHER EDIT.........You can fit a thin fleecy layer, a thicker, fluffier fleecy layer
AND a goretex (or similar) waterproof layer into s single Kriega US10, and STILL have room for a fleecey buff, a pair of silk glove liners, a Mars bar and a microfibre towel.....A US10 will strap on top of any pannier, pillion seat, back rack or ontop the beak of a GS.