I think its important to define "removable battery".   To me because I have basic techincal and mechanical skills....I do not mind having to pry or what ever to get a back cover off to replace the battery.  If the manufacture makes it a "quick open and change"  kind of deal for swapping out batteries....that is fine.  But I do not mind using simple tools to do this. 
I just want a phone that has waterproofing and that I can replace the battery after 1 to 1.5 years or so.  I do not want a phone that I cant change out the battery when it starts to loose its ability to hold a charge.  So some phones turn into 1 owner phones or get pitched out in less than 2 years old.  This trend is filling up the waste sites with old phones quickly compared to replaceable/removable battery phones.  
I have seen a few tear downs of the G6....but not one yet that actually shows what it takes to get the back cover off.  I want to know if the glue/tape that seals the back off is reusable....or what it might take to replace it for $ if I replace or change a battery.