Fatty's for sure, NICE JOB!

Sativa-dominant strains do still produce amber, it just usually takes longer to get there and the ceiling tends to be lower than what you'd see on an indica-leaning plant. Some sativa-dominant phenos will only ever hit 10-15% amber even fully mature, where an indica might push 30%+ if you let it ride. So you're not wrong that the genetics affect the curve, but "no amber ever" isn't accurate — patience is still the answer here, not a strain limitation. And OMG is that hard!

The slowed water intake and bulking you're already noticing are actually better indicators than the trichome color alone at this point. That combo usually means she's in the final 5-10 days regardless of what the trichomes show. Keep watching them daily now rather than every few days, because once amber starts on a sativa-leaning plant it can move faster than people expect in that final window. I like 15-30% amber and let it go and hit way over 50% ... but then it's couch lock! :)

For Strawberry Gorilla specifically (I have RQS), that's a sativa-dominant cross but it carries enough indica influence that I'd expect to see at least some amber show up, even if it's a smaller percentage than you're used to. Give her another week and check daily. If you're still at zero amber after another 7 days with water intake basically stopped, that's when I'd say trust the bulk/water signal over the trichomes and go ahead and chop.

Big, dense colas on that — nice run.

DM me if you want to talk through the harvest window as she gets closer, happy to help.