I practice about 3 hours a day, and I've only been using I-No for about 2 weeks, and I've learned how to do the HCL 6FRC6 in the combo, in the corner, 5S© 6P 5H j.S j.H HCL 6FRC6 j.S VCL.... It does crap for damage, but it looks cool for just picking up the character, no?
What I do, is I press 6FRC6 as soon as I see HCL come out. It has a sort of rhythm to it that you just have get used to it. Even if it doesn't even look like you're landing the FRC at all, just keep practicing it over and over again, because when you do land the FRC, your fingers will get used to the rhythm, and you'll learn to do it on reaction. ^_^
