I've not used that particular toy... It looks good but I think the open end may be a problem because you won't be able to get good suction. It depends how large you are though, you might be able to use it no problem.
I'm pre t and I've had good experience with the love to love sexy pill sleeves (the pink one is best), but I believe they've been discontinued? They might still be available in your area though.
My advice is to go for a sleeve with a closed end that can get good suction. I've not used it myself, but I think tenga egg looks good. It says they're one use but they're really not. If you keep them clean and dust them with cornstarch they last for a long time.
Again, I've not tried it, but I've heard you can use a pump to masturbate?
Ultimately it's going to take a lot of personal experimentation to find something that works for you.
If you're looking for more ftm toys, I really suggest looking at Chase Ross's sex toy reviews on youtube. He's really thorough and honest, definitely worth a look before you spend your money
www.youtube.com/playlist?list=PL7SgbxvTR7N6y2x6g0YZOGRl88XKepxnxGood luck and let me know if you stumble upon anything worth sharing!