Hello 'mate...
Could well be down to the show where the actor is appearing - more to get through could mean shortening of the signature. I picked up JDL recently and was third in line, got his full sig. I suspect he shortened later....
DK and JL have also signed in full, both a smaller conventions than sya, Creation. Will have to e-mail you scans! All being well, with Collectormania having established a reputation for a more personal experience, we shouldn't have too many worries...
Dax