I have heard of folks using both, as I am attempting to do, but I noticed a few issues today.

1) There appears to be some bruising appearing on the head of my penis. It is kind of hard to see, but I'll link the pics below anyways. I think it is caused by the bathmate, but they could come from the extender I use afterwards. Picture 4 of 4 from Bathmate Meets Extender

2) I think the extender might be misshaping my penis due to the fluid the bathmate draws into it. The misshaping can be clearly seen in these photos and the bruises might be more visible as well. Picture 2 of 4 from Bathmate Meets Extender and Picture 1 of 4 from Bathmate Meets Extender

The damage does not seem to be permanent. It takes a few hours for the shape to return and the bruises seem to be gone by morning.

My penis was very sore yesterday and I planned on taking today off, but did not as I felt better this morning. Maybe I should have... Does anyone have a link to a good discussion on rest days?