Heh; no, no celebrations in his honour. :p Calvinism is the name of the theological system rather than the denomination (I'm Reformed Baptist), and it's not like the name gets mentioned a lot in our church services and so on... but in apologetics and online debates and so on, the word "Calvinism" comes up quite a bit, so I'm... aware of it, if you know what I mean? And it's unusual enough as a name that people in Reformed circles would associate it automatically with John Calvin - whereas, say, Martin (as in Martin Luther) or Owen (for John Owen) aren't as immediately obvious. I suspect we'd get a fair few people saying "Heh".
You're probably right, though. I do love the name. I like Calvin and Hobbes too, but I particularly like the name from A Wrinkle in Time - there was a boy in it called Calvin (Cal for short, I think?), who was just a sweetheart. I'm not sure DH likes Calvin as much as some of our other contenders, though... a friend of his has a little brother who was recently arrested for smashing up a supermarket with a baseball bat, so I think that puts him off a little. :p
We haven't come to any firm conclusions about names, sadly. I'm beginning to suspect we'll go with Miles after all. I'm semi-resigned to that.