i have been using that mace since like level 11 im now level 32. yes the damage DOES scale with the one handed perk, the enchantment does not however get stronger. it uses ebony ingot to upgrade it, i have 100 smithing and couldnt upgrade it passed flawless.
i did a comparison with a ebony mace, and the mace of MB does like 4 less damage than a legendary ebony mace, at level 30, with armsman 4/5.
Well thats not really that helpful to be honest... The damage of all one handed weapons will scale as you increase the 1h skill or take the armsman perk. The enchantment, won't get stronger as you level as it doesn't work like that.
Do you have the ebony smithing perk, if you do then it's an unfair comparison, the ebony mace will be upgraded to 2x the effectiveness than the moleg mace (it uses ebony ingots, but doesn't benefit from the perk).
I'm talking about the damage, and the enchantment magnitude you get when you first get it. Thanks anyway though.