In my experience, it is a good product.
Especially if that is what the chameleon has been brought up on thus far, then in my opinion it is good to continue the regimen.
Variety is best, and the main thing is to make sure you have plenty of nutritional variety in your gutload.
The calcium supplements we use are for balancing calcium and phosphorous ratios in the feeders, which are naturally inappropriate in most feeders.
Multivitamin supplements are to make up for any nutrition lacking in your gutload. Not a substitute for it.
The D3 is just to make sure the chameleon is getting adequate D3 in its system, but naturally synthesizing it is best. Which is what the UVB radiation is for.
Keeping these things in mind, you should be able to ascertain the best regimen for your particular situation, as everyones is different, its best to study as much as possible, and find what works for you and your animal, not follow someone elses advice to the letter.
In my opinion though, RC+ 6 days a week is plenty, but you will still need to balance your feeders on the day off. You want to use enough supplements to balance your situation, but only just enough.