I think that the g-spot orgasm and the clitoris orgasm are both so great and so different. The G-spot is a sense of release and comes from deep inside, whereas the clitoris is kind of nervous, high energy, and more of a superficial feeling, almost like your vagina wants to consume something.
I think this feeling of wanting to consume needs to be followed by the g-spot orgasm to feel really satisfied and have a complete orgasmic experience.
But I think that they are both very easy to achieve, as well multiple orgasms.
I have g-spot and clitoris both every night from my guy. If your guy can keep it up for a long period of time, then it will work. I once had 5 orgasms in a row. And 8 orgasms in a night.
I noticed the best way to have the multiple orgasms are on top, because then you are in control of the sensation.