On a similar note, after purchasing the car I took it out several times trying to recreate the rear axle 'hop' that I'd heard described - and sure enough, I finally found a sweeping on-ramp with a depression in mid bend, where I was able to recreate it when driving at a good pace.
So I ordered the Eibach sways (on backorder at the time), and over the several weeks waiting gradually rethought my position. The 'hop' didn't cause any unsafe behaviour, it just was an unexpected reaction. More that that, the only time it did occur was with that particular form of mid-corner dip that I ran across almost never. Overall, I really enjoy the way this car was set up for suspension from the factory - not too stiff, not too soft. As far as flat out competition driving, I have no plans to track the car - that isn't what I bought it for.
So I contacted the vendor and cancelled the sway bar order. And yes, over the year that's elapsed since, I've simply enjoyed the car's handling, and never thought about the issue again.
So for those looking to get sway bars (or any other modification for that matter), my advice would be to make sure you are addressing something that YOU feel needs attention - not because you read about a 'must have' upgrade on the internet ...