Ok demons are like most other creatures they have free will a succubus or inccubus is just a little more sexual just be careful in the actual summoning
I also agree with the disclaimer. And if you know what the words mean you've already been exposed to this stuff at some point. And the best deffence is knowlage. And don't crush people just cuz you disagree with them!
I guess I will just come out with it and say this. all spirits, demons,angel, etc. are indenpent and are subject to free will. I am well traveled myself and I know that whatever you call one just make sure to get to know it before you bind it to you. a spirit if it chooses can follow you with some exceptions. I have had plenty of incubi in my time and each ver different from the last, but most are drifters and don't lay down roots. you might have better luck with another type. I claim no perference of one or another. but remember they like engery like any spirit they need it like we need food and water. so raise you engery level and work on spiritaul indurence. sorry for the missspelling. I meditate a lot, I scry, push my engery wake wider, and travel out of body all the time. Understand their are many kinds of demons, some from hell or whatever you might call it and others that are from spiritual planes. it is their views that make them a danger, watchout for what I like to call the hellspawn.
they only want to corrupt and are very sliver tonuged but not always quick witted. listen for key words and trust your instincts. I mend some come in dreams and they talk in them.
Best of luck though. I hope that is what you want, they can be possessive. investing into someone and laying down roots is a big deal for anyone, if you find the right person or spirit. be careful
i summoned a succubus and they can be summoned in this plane and yes they can have sex with you in the physical world and in astral world if you need more info go here http://acrossinfinity.wordpress.com/tag/lilith/ also read all and be carefull good luck:D