Not so fast, to log PiC time, you must be rated to fly the class, category and TYPE! Read FAR 61.51 in its entirety. And just a SiC rating won't do it, either. Comm MEII just gets you SiC qual'd in US airspace assuming you have been trained IAW FAR 61.55 and, if you have, why not get the SiC rating? Just a form, signed training record of any kind and a visit to the local FSDO.
GF