Thanks folks! I get all of the arguments, and if i want side charge, I should just put on the Gibbz...(or a similar, well known, reliable, side charging upper).
One comment for the range only folks.. I am not in 'nam or 'stan or anywhere like that. I am at a range competing, and due to the rules, I work the handle at least twice every stage (start bolt down on a chamber flag, open to load, rack at the end to empty and show clear and put the flag back in). That is no biggie, but if I have a dud or miss feed/jam, that is where it gets exciting, I need to clear and get going again with the clock running. A lot of guys keep the gun shouldered and rack with the left if they have a side charge. That is pretty much the reason for considering side charge, saving a second or two with the clock running.
For the record, I have never had a miss feed or jam, so this is all hypothetical for me... My AR is the most reliable gun I own (a dressed up M&P 15 Sport).