yes they are the Triumph bags. Lots of room on the left side. The exhaust on the right takes up rather a lot of space however. I went with them because of the quick on/off feature. And also because they were already on the bike when I bought it slightly used.
The Mayer seat is the basket weave vinyl. They also come in leather for an upcharge. See the website for details. I went with the vinyl as it holds up better when left out in the sun for long periods. and as I commute with it a lot, it will get left in the parking lot this summer all day in the hot Alabama sun.
And I still really like it. Like no seat I have ever sat on before.