Yes, and add in stories indicate that Hue Jackson has put in some Terrell Pryor packages as well but assuming JG is accepted back by the coaching staff and that Coleman's game transfers I see Gordon as the X and Coleman as the Z. I like HIggins and he could shift to the slot where 31-year-old Andrew Hawkins, who suffered multiple concussions last year is currently slotted.
The other two rookie WRs that the Browns drafted have yet to distinguish themselves. I don't see them all making the active roster once JG is back.
JG is obviously on thin ice and I'm assuming the team would want a more reliable player as the #1 WR so they must be hoping someone emerges but if JG is healthy and has his head screwed on, he is the undisputed favorite to man the X-WR role.
The Browns were currently listed with the 3rd shortest and slightest roster in the NFL but if Josh Gordon comes back it would mean a smaller/shorter WR like Taylor Gabriel would be gone and he was/is on the bubble to make the team,
Coleman isn't the biggest guy to take over the X. We don't know if he can beat press-man coverage and HIggins is thin for his height so that is why I think he would be a better fit in the slot IMHO.
Coleman is getting first team reps and tons of one-on-one coaching from the WR coach and Hue Jackson.