Ken, are you a master penman yet? Because I swear after oggling and drooling after all your exemplars I am FLOORED...they are amazing...I'm out of words to describe my awe after this...
Ken is too modest to respond in the affirmative to this question, so I will offer you my opinion: Ken is indeed a master penman. He may not have the title that IAMPETH has conferred over the past 30 years or so, having never sought that title from them as far as I know, but surely would be granted that title if he were to seek it, imho. His work is better, again, in my opinion, than a number of people with the official title.
At best, in his modesty, he might describe himself as a scribe or master scribe.
Lest I reignite the discussion of what constitutes a master penman, which is discussed at length elsewhere on this forum, I would simply say I am old school on the matter, meaning I look at a person's work and compare it to the best work ever published that I've seen (for example, the "Universal Penman" for English Roundhand). Is Ken's work comparable? Yes, it is, again, in my opinion. That makes him a master by my lights. In olden times, that's how the title was granted, informally--by a person's peers based on the person's work. Whether or not a person has an "official" title granted by a self selected group is quite irrelevant.