Inspiration: Keystone: Unsealed Spellbook: Can't Buy Talent

>"Buying Smite won't grant access to Smite items (you'll have to start with Smite)"

OK, let's start by putting aside the fact that the smite requirement on junglers sucks.

Question: If I start with smite and I change my summoner spell do I keep my access to smite items?

If yes, then fair. If no, then follow up questions: What if I change back to smite? And why do you hate junglers so much RIOT?