There are ways to get the specular to show variation without using a bump map. I don't want to discourage you to learn interesting techniques, but I don't think you want to go there for this particular shader application. You really will get the best results with a bump map, since the bumps in human skin are the real-life reason we see this. If the real-life reason was that there was natural small-scale variation in the specularity then we'd want to pursue other models that vary the amount of specularity.

But the correct model here is a fine bump. So the orange-rind problem is not because of bump, per se, but rather because you used a bump pattern with size and shape like an orange rind.

Here is a demonstration of a suitable wet-human-skin bump using a turbulence node. Notice the bump depth is .005 inches - very low - not at all like an orange rind. Notice also the Turbulence scale - .05. With a bump this small, you can't even see it unless the skin is wet!

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)