Thats Me!!!!! "Just Plain Stupid"
I use both the Etymotic ER-20's and the ER-6i's. However, the ER-20's are the only thing I'd use on a motorbike or the Spyder because I prefer to listen out for engine noise, other vehicles and emergency sirens. Listening to music while riding is just plain stupid but that's only my personal opinion.
I have the ER-6is too. I like what the do and agree with Jetskier.
I have the BRP Sport Touring windshield and (VERY noisy) HJC Symax II. I get the low band wind rumble, but greatly reduced.
I wear glasses also, but I don't have any problem with the earbuds staying in place - or problems putting my helmet on or taking it off.
The music quality is very good, if not excellent, with the ER-6is, I am very happy with them.
I don't hear other traffic - this was expected, since I can hardly hear my leaf blower and when I wear them vacuuming, I cannot hear anything but the music. I really watch the road and my mirrors, but this is my normal mode after have some "surprises" occur behind me over the years.
I have only started wearing them on the Spyder, I have only been riding it for about 100 days and I wanted to get acclimated to it before I shut out a lot of the noise.
The biggest surprise for me was shifting. I thought I was getting a lot of clues on shifting from rev vibrations, I do on my BMW F650 GS. But on the Sypder I cannot really hear the engine and have really pushed the RPMs a lot higher than I do without the ER-6is working. There is not ( on my Spyder ) any real tactile feeling to tell me when to shift, so I have to watch the RPMs when I start out - something I never really had to do when I can hear the engine. ( I normally shift around 4k RPM )
The only other downside is that I play very upbeat music and I tend to drive to it - so my mileage has suffered somewhat.
Bottom line is: I like them and I don't ride the expressway without them.
Tom