Yes, but teachers recommend learning Hiragana/Katakana within 2 weeks and switching to the standard Honsatsu. Romaji becomes a crutch.
While official copies are typically sold in print, digital versions and community-shared resources are often sought after for convenience: minna no nihongo honsatsu romaji pdf 16 2021
For learners beginning their Japanese journey, (the Romanized Version of the 2nd Edition) is a cornerstone resource. This specific version allows students to dive into grammar and conversation without first mastering the Hiragana or Katakana scripts, making it a popular choice for rapid introductory learning. Key Features of the Romaji Honsatsu Edition minna no nihongo honsatsu romaji pdf 16 2021