I am unsure whether what I have written below constitutes a comma splice error because of the addition of "it would seem" at the end.
"He is a very clever man, almost too clever, it would seem."
I originally wrote it with this punctuation because, to me, "it would seem" is parenthetical and merely an afterthought. (I'm not sure if there is specific terminology for words that appear at the end of a sentence in this way. If someone could let me know if there is, I would very much appreciate it.) Therefore, I don't think "almost too clever, it would seem" is a grammatically complete sentence, but I'm starting to doubt myself and wondering whether I should rewrite it like this:
"He is a very clever man. Almost too clever, it would seem."
If I were to remove the middle part, I think it would be fine with just the comma.
"He is a very clever man, it would seem."
But the addition of "almost too clever" has me confused over what to do. My confusion extends to similar sentences that end with either "I believe" or "I think" preceded by a comma. For example:
"He's married to a very wealthy woman, a highly successful criminal lawyer, I believe."
What is the correct way to write sentences like this and why?