I have a mesh bulkhead fitted and getting to the engine is an art...unbolt the console, un-hook all the clips, push seats forward, seat backs forward and then tip forwards....

the mesh bulkhead doesn't seem to affect engine access but I could not vouch for a solid one.
It's just noisy, thirsty but so far it has been a real trooper mine has dual side doors which is a nice feature...taking over anything on the motorway needs to be planned as it is not a quick affair.
But saying that I bought mine 5 years ago for about 4k and it's still going ok but next year will see the beast changed for a another van ...
Cheers
Dave.