A true hybrid mod has an atomizer made for the mod that screws down directly on top in place of a 510 connector and makes direct contact with a battery (had to put that in before the technicality police get me). For the purposes of this discussion a Hybrid 510 connector would essentially be a threaded hole that the atomizer gets screwed onto which allows it to make a direct connection with the battery. This is why a protruding positive pin is necessary. The threaded part of your atomizer is the negative portion the center pin is the positive. If your atomizer is flush on the bottom and you screw that directly onto a battery, you create a short which can range from bad to catastrophic. There is no circumstance where it is a happy experience.
Look very carefully at the bottom picture. It shows the difference.
That mod is not a hybrid. There are not many (any that I am aware of) parallel box mods that have hybrid connections, this is more typical of series mechanical mods due to the battery orientation.
Start here:
http://vapingunderground.com/threads/mooch’s-minding-your-mech’s-series.415417/page-2#post-2232108
Then read up as much as you can on Ohm's law, Learn about batteries and their real limits (Discover Mooch). Google around and learn what the different types of mech mods are and how they are used and their limits. Know this stuff before using a mech.
Using a mech mod can be an awesome experience if thought out well and you know what you are getting into. It can also be the most mediocre or miserable vape experience if you have no clue what you are doing.
On a regulated mod the chip does a lot of the thinking for you. On an unregulated mechanical mod you do all the thinking for it, therefor it is super important it is well thought out and accurate.
To answer your last question that depends. What kind of batteries are you using, what kind of coils are in your tank. It may run but not very well, it may drink your battery in minutes, may pop your batteries. Ohms law, learn it. Battery Safety, learn it.