I have 6 Summon Tickets is intelligent spend them in Camelot Singularity Banner

I would say save your tickets unless u feel like u have a EX rank luck today. From personal and statistical point of view, you don't really stand much chance with just 6 tickets.

You're not alone! I'm also thinking of spending a few tickets as I'm hoping for Altria (Lancer), Ozy, Lancelot or Nitocris.

Honestly, just make sure you stick to your limit of 12 tickets and don't dip into your SQ stash if you're saving for Musashi.

Good luck to both of us!

You can risk it but don’t expect too much, it is possible though. I got my Nito and Ozy in 3 single rolls when the first Camelot banner was out but hey, not everyone has the same luck all the time

The multi rate-up means the chances to get a specific servant are pretty terrible. You might get Gawain, but you'd still be very lucky lol.
Then again you won't lose much by spending 6 tickets.

I actually have Ozy, Nito, Gawain, and Tristan (I went nuts on the Camelot rate ups). Nito is definitely worth it for the farming potential to clear everything in 3 turns and Tristan is an amazing utility archer for his skills.

Honestly though, between Ozy and Gawain. I use Gawain waaaay more and am grailing him. He isn't as bad as many claim so long as he's got some support like from a Waver or at the least a Hans or Mash. His attack buffs are monstrous under sunlight and it doesn't take much to get his NP off which I like to use for burns. Ozy is of course amazing and does incredible damage but I use him more for bosses and longer fights. Long story short is that Gawain is waaaaaay more usable than people claim.