Hmm, I'm not sure what to make of the fact that Lock Seeds - and by extension, power-ups, are things that literally uhh, grow on trees. Doesn't really stop anyone with a Sengoku Driver and a way to get into the forest from just waltzing in, and providing they live long enough, do their daily five-a-day shopping for absolutely free, before waiting a bit for the fruit to ripen into new plastic toys. And I suppose if they keep losing their supply of lock seeds, or keep breaking them, as we've seen this week, they'll have to regularly go pick more.
The fact that we've still no real clue who Griton/Gridon's user is supposed to be, coupled with the fact that his/her Lock Seed is a tier behind the other riders', suggested to me that it could just be this series's equivalent of the Delta belt. Everyone gets a go at it, and it might settle for a slightly more permanent user down the line. At least that was what I thought until this episode established the fact that only the first user of a belt can be the rider. I suppose for now, all we have to go on is the possibility that this is an underling of Baron.
Didn't like the fight against the CGI Eldritch Abomination as expected, but other than that, I really enjoyed this episode. Got a lot of chuckles out of me, and I'll echo the sentiment that if I were in his position, I would totally spend hours playing around with the belt. I wouldn't whip it out and change in public though.