That's just plain silly. The only reason to make your miner combat oriented is to kill the ore elementals, and that's not even really necessary. You need enough magery to recall, mine with protection on. Its stupidly hard to kill someone (I've tried, script miner) before they can recall when you can't interrupt them.
What I do for ore ele's is I take my stealth mage out to where my miner is and hide him, then log out. When I dig up an ore ele, miner recalls out, I log onto (on a seperate account) my stealth mage, go kill the ore ele and take the ore off the corpse, hide, log out, and recall back in on the miner. It sounds more time consuming than it actually is, and I can keep my mining on a crafter where its useful.
First off, this template isn't combat oriented, its defense oriented. It can still perform the functions of resource gathering in all 3 areas (mining, lumberjack, leather), plus survive most attacks from a pker. It can also handle itself against basic monsters and elementals.
A good pker who hunts miners a lot can easily kill some miner with protection on throwing a recall spell, especially if the pker is a mage.
Mining on a craftsman is only useful when training blacksmith, so you can smelt the items as you create them, to use less ingots for training. Mining on a craftsman after you max out your blacksmith ISN'T useful because you won't be using your smelt ability that much. Best to have mining on a resource gatherer instead.
Exactly how does having 100 mining on your craftsman help you crafting stuff? Last i heard, mining facters in NO WHERE when crafting items. Its used to dig up ore, and smelt.