I can confirm that Karel and I at one stage considered using the PCL86 in my build, but my objective was to build a true copy of the original, from voltage doubler circuitry (with the correct, scarce diodes), ECL86s in the power amp and the very scarce (and expensive) ECC807's in the preamp.
Luckilly, a number of fellow forum Samaritans stepped up to the plate and I was able to procure some NOS ECL86s! I can't thank them enough....
However, I am planning another build in future using the PCL86s and the ECC83s (12AX7), where the heater voltages that can be used are closer to each other (between 12v & 14.5v). As a matter of fact Karel is busy putting together the power transformer to this specification for me already. I also already have NOS stock of the valves required to do this.
At the moment I am considering doing this as a split configuration (i.e. not an integrated), with separate:
* Power supply
* Power amp monoblocks
Should be an interesting exercise.