The envelope is in my opinion not think that they are constantly on and subtracting. This is somewhat strange, also the phone is supposed to be permanently protected. Therefore turned to me the sequence problem of finding additional accessories, which fits the S5 with envelope. After a long search I am here now as follows has shared:
Car Holder: Wicked Chili Car Holder for S5 and others. In this holder the mobile phone with envelope reinpasst just. It holds and can be attached / removed easily. Even apart from that I am happy with the holder.
Bicycle rack: Bingsale bike mount for S5 and others. The phone fits easily with shell and can be clamped firmly. To remove you have to press a lever to loosen the blockage. Whether this mechanism a continuous use can withstand very long, I doubt it. The holder is not as high as the Wicked Cili car holder definitely. For the cheap price but you can not complain, and so far it works.
Sport Armband (for jogging): Shocksock Slim Fit Neoprene Armband for Samsung Galaxy Note 3. The size is such that a grade 3 just fits. It therefore fits perfectly for the S5 with envelope and is otherwise fine.