Маску могут не взять на сток. 50/50, смотря какой инспектор будет. И что потом покупатель с этой маской будет делать? Не все хорошо знают иллюстратор. Вот мнение инспекторов по поводу маски. Так что лучше тупо всё обрезать автоматом скриптом Magic Eraser
"...Masked illustrations determine your final artwork size by calculating the size of any objects contained within the masked group. This means that when the file is placed in another program (like InDesign, or Photoshop) or exported as a PDF, your file size could appear skewed. Once again this isn’t a major problem but it could be an annoyance to professionals and confusing for novice customers.
Another potential issue with masks is they can be difficult to edit for people who aren’t familiar with how masking works. Most people assume that they can click on an object in a vector file and move it around, but if a shape is masked, this isn’t always the case. If you’re using masks in your file it’s best to leave a note in your image description letting customers know how you built your file..."