Yes, I have seen these before. I have a pending project in Eugene OR where the client installed these same lamps in cans as you did. He brought them into the JDL counter the day I was there. Your sample looks good compared to his!
The Brilliance lamp is THE solution to your situation. They are more expensive than your sample in the photo, but consider our lamps are rated 50K hrs, as long as 10 of the standard landscape 35w units, but our LED should cost you only about as much as 5-6 lamps.
Then calculate the energy savings. You should see a great return on investment. Do the math for each client and you give them the best opportunity to say yes to you and to Brilliance. Let me know if I can help.