Here's an old spirit taker number I took back in the day. Used to break over 1k with sneak attack tacked on there. It can be efficient too if played correctly. I once outparsed everyone in my dynamis linkshell except for a relic DRK, as SMN/THF.
Melee summoner's something fun that you can do now and again, but it's only really useful under certain circumstances. For instance, if the mobs you're fighitng have AOE damage, don't do it; if you're going to pull hate off of your avatar, dont do it.
I'm not sure if everyone's aware of this, but the point of melee smn is to use spirit taker to replenish your mp quickly, in order to spam BPs nonstop.
I realize most of the proponents of melee summoners on most summoner forums are just trolling. If anyone advocates the use of weaponskills besides spirit taker, they're probably trolling. However, using spirit taker is the fastest way to replenish your mp over time, and if done properly, will allow you to perform many more blood pacts before running out of mana (assuming you ever do run out of mana).