This is exactly what I have too!
The tip can be removed and a variety of others can be attached such as for the gas mask, etc.
This pack tucks right into the accessory pouch on the back of the South African designed M83 AUSCAM LBV/webbing I use, and when not using the LBV, the pack can just be worn by itself.
This kit is ‘milspec‘ and if you want to buy the CHEAPER kit, thats up to you, but remember, you get what you pay for.
I have had this for a couple of yrs now, and when I bought it, our Aussie dollar was only 51c US, so hence I paid $A140 for it (ouch).
The system is great, and I can drink on demand, and therefore, I believe that troops who use the camelbak systems, are hydrating themslves at a faster rate than with those who are still using the old water bottles.
I rate it a 9.5/10 for ‘good kit‘
Cheers,
Wes