He's been named on the Glasgow bench for tomorrow's meeting with Leinster at Scotstoun.
The 26-year-old New Zealander is already adapting to life n Glasgow and has been staying with team-mate Siua Halanukonuka, who he played with at Highlanders.
Speaking to Warriors TV, Seiuli said: "He's been awesome - it's been great to see him again and catch up. Hopefully he gets through his injury soon and we can take to the field together for the Warriors.
"I'm really looking forward to getting out in front of the crowd here at Scotstoun. Hearing them at the Sale Sharks game was awesome - they're on another level.
"The atmosphere was incredible. I'm looking forward to running out and embracing that atmosphere alongside the boys, and I just want to offer as much of an impact as I can.
"I wanted to travel and use rugby as an experience through which I could see the world."
Seiuli says his new team-mates have helped him adapt his game to Glasgow's fast-paced style of play.
"I'm learning as I go at the moment! It's quite full-on, but I'm just taking it task by task and week by week. All the lads have been really considerate of me though, which I really appreciate - all the moves and everything are second nature to them by now, but they've really helped me to settle in and get up to speed.
"The environment here is really good, and the lads have all been really welcoming. I'm enjoying my time here so far - it's been awesome.
"Glasgow play a great brand of rugby, and that really drew me here. Having a fellow New Zealander like Dave was a bonus too, as well as Siua already being here."