Everybody is different, I can't really tell you if you are going to adjust to it or not.
I did to some degree, but I did end up switching back to my DW5000 I was using for years and years. I used my Trick Bigfoot for almost 3 years gigging on a regular basis.
I felt that lag that you are talking about with the slave pedal and even tho I adjusted it so it was playable, I never got it to feel right. The Trick is so adjustable, it's great. I customized it to feel great under my feet, but I think I was subconsciencely adjusting it to feel like my DW.
I realize that any slave pedal is not going to feel like two single pedals..I adjusted the Trick as best I could and it felt decent...but for some reason, the DW still feels better to my feet. One thing I didnt like about the Trick is it didnt have the stopper pegs....It felt a tad loosey-goosey on the floor even with the velcro grip tape it came with.
I think the reason the DW felt better to me was the cam and the recoil of the springs (as opposed to the direct drive and compression spring) and the "throw" or should I say the feel of the throw. I dont know if Im descibing it right, but I "use" that throw - and when it was missing with the direct drive, I felt it was a disadvantage to me.
I wouldnt give up on the Trick...it really is an INCREDIBLE pedal, I was so impressed with it. Like the other guys have said - they adjusted to it just fine and took advantage of all its features, and you could too.