Quite a bit of raw data to chew here, that might explain the lack of comments. Also, people here seem loathe to follow links.
I like the idea, but its hard to do right. You have some good ideas, but need a lot more polish. This is not the first attempt at a fencer class, you should compare to the others (Fencer Class 4E.pdf).
I see you have made him a Dex attacker like the rouge but not made him use light blades. This is both good and bad - it gives versatility and allows many fighting styles, but it runs counter to what most people think of as a fencer. There is nothing to prevent this guy from picking up a really big axe and going all out for damage. (Agile defense is after all just a weaker version of a large shield, and many fighters don't use shields). Having him start with only simple melee but adding rapier proficiency, while making the powers only work with light blades is a start. You can then add a feat that allows the use of any weapon. The cost to use an unusual weapon would then be two feats - one fr proficiency, one for the special "can use non-light-blades with fencing" feat, which seems about right.
Without an in-depth analysis, it seems on the strong side. The dailies that are modified by style are potentially very strong, for example.
Gut punch mentions an off-hand weapon in the fluff, but requires neither an off-hand weapn nor a free hand. Of course, it could be a gut kick.
better Luck Next Time seems to offer a defensive advantage even to yourself in the Swashbuckling Duelist variant. Is this how its supposed to read?
Devious parry is unclear (do you still take the damage) and probably overpowered since its automatically successful.