I have been using one for a month or so which I bought as a replacement for the DE89 (round handle ) one which slipped out of my hand as I was shaking the excess water from it which resulted in a broken razor !!!
Tried the Merkur Slant which was lent to me by . Loved the handle grip but razor a bit aggresive for me using it daily.
I love the head of the Edwin Jagger but must admit I find the handles a bit slippy.
Back to your question....................... I have not noticed a difference in weight,