Roman Tunic - Help

[Martin Moser]

What's your opinion in this case?

That's a clear one: never look to TV productions for guidance on how to do anything historical. :-)
I know of a couple dozen or more originals (more or less fragmented) and there is no indication among them that they were sewn on in the first place. There is one heavily patched tunic from Egypt where parts of other tunics were used and in that way parts of the clavi were stitched on - to quote:

[attachment=9103]Mons.PNG[/attachment]

(Source: Ulla Mannering, 'Roman Garments from Mons Claudianus'. Archéologie des textiles des origines au Ve siècle. Actes du colloque de Lattes, octobre 1999. edd. Dominque Cardon et Michel Feugère, éditions monique mergoil, Montagnac, 2000, 283-290.)

As you can see this was only a repair and done to upkeep the original appearance of the tunic.
The tunic from Sirko is among the best you can get at the moment without having something made bespoke I would say. It still is not completely correct, though, as the clavi are a warp facing weave (or warp rep/Kettrips in German) while the originals are always weft facing weaves (or weft rep/Schussrips in German).

Applying ornaments also seems to have become more common in late antiquity with sets of ornaments being re-used (ie.e cut out and sewn on to a new tunic) or prefabricated on a smaller piece of cloth (still woven in there) and then applied to the tunic. But we are not talking about this late, if I understand you correctly.

In the end it's down to how close to the originals you want to get and how much money your are able and willing to invest for clothing. Strangely, many (male) reenactors easily part with 4 digit numbers to get a fancy sword, but are content to wear that sword along with a tunic equivalent of the infamous trooper helmet :-P
Good stuff costs good money, there's no way around it.