If your planing on fighting semidar the char is likely to die unless you're female.
Mace vs Fencing... When you're depending on leech to live you want to be hitting as hard and fast as possible, diamond mace is the best option for that really, or ornate axes with swords. Macing also has the best whirlwind weapon for spawn clearance (black staff - though good ones are hard to find).
The life leech property on weapons isn't literally the amount it says either, theres a formula involved which I cba to explain but it basically means that the leech on blackthorns kryss's is useless, at least for anything difficult like going toe to toe with a champion.
The leech property from necro forms is literally 20% for vamp form & 50% for curse weapon and they do stack. (Though one or the other is preferable imo)
Overall the most solid template for this imo has always been:
120 wep (mace or swords, d mace or ornate axe)
120 bush
120 parry
100 tact
100 resist
100 necro
70 chiv
With that a weapon with 40 mana leech is sufficient though stam leech also saves you having to use divine or pots but it's not really a problem.
Lightning strike constantly, counter attack &/or evade also. Hence the resist, every level of semidar has casters, being mana vamped is irritating and avoidable.