Unappealing, yah.
Reading it reminds me of the word nipple.
Hearing it reminds me of the word cripple.
I'm sure it's not hard to get used to in real life though. I mean like, if I had a coworker named Kepple, it wouldn't be making me squirm every time I said it. It's just a surname name, as far as I can tell.
- mirfak